- Packer, L. 1983
- The nesting biology and social organization of Lasioglossum (Evylaeus) laticeps (Hymenoptera, Halictidae) in England. Insectes Sociaux 30:367-375.
- Packer, L. 2000
- The Biology of Thrincohalictus prognathus (Perez) (Hymenoptera: Halictidae: Halictini). Journal of Hymenoptera Research: Vol. 9, No. 1, pp. 53–61.
- Packer, L., Plateaux-Quénu, C. and Owen, R.E. 1992
- Electrophoretic evidence that Lasioglossum (Evylaeus) mediterraneum (Blüthgen) is a species distinct from L. (E.) laticeps (Schenck) (Hymenoptera Halictidae), with notes on its phylogenetic position. . Canadian Entomologist 124: 371-380.
- Pádr, Z. and Tyrner, P. 1990
- Hymenoptera Aculeata a Symphyta na Písečném vrchu v Českém středohoří. (Hymenoptera Aculeata und Symphyta am Hügel Písečný vrch in Böhmischen Mittelgebirge). Sborník Okresního muzea v Mostě, Ř. Přírodovědná 11-12 : 19-48.
- Pagliano, G. 1995
- Hymenoptera Apoidea. In: Calderini (ed.), Checklist della Fauna Italiana, pp. 1-25. Bologna.
- Pagliano, G. 1994
- Catalogo degli Imenotteri italiani. IV. (Apoidea: Colletidae, Andrenidae, Megachilidae, Anthophoridae, Apidae). Mem. Soc. ent. ital. 72: 331-467.
- Pagliano, G. 2003
- Family Andrenidae . Available at: http://www.faunaitalia.it/checklist/introduction.html. .
- Patiny S. 2012
- Atlas of the European Bees: genus Panurginus. Mons: STEP Project, Atlas Hymenoptera. [cited 2016 Dec 20]. Available from: http://www.zoologie.umh.ac.be//hymenoptera/page.asp?ID=232
- Patiny, S. 2001
- Monographie des Panurginae de l'ancien monde (Hymenoptera: Apoidea, Andrenidae). Thèse de doctorat. Faculté universitaire des Sciences agronomiques de Gembloux.
- Patiny, S. and Terzo, M. 2010
- Catalogue et clé des sous-genres et espèces du genre Andrena de Belgique et du nord de la France (Hymenoptera, Apoidea). Université de Mons, Laboratorie de Zoologie. .
- Patiny, S., Michez, D., Roberts, S. & Rasmont, P. 2014
- Dufourea alpina. The IUCN Red List of Threatened Species 2014: e.T19198281A43359222. http://dx.doi.org/10.2305/IUCN.UK.2014-3.RLTS.T19198281A43359222.en. Downloaded on 04 November 2018.
- Paukkunen, J. and Malinen, P. 2014
- Andrena Fabricius, 1775. In: The Finnish Biodiversity Information Facility . Available at: http://ws.luomus.fi/lajitietokeskus/search?locale=en .
- Paulus, H.F. 2018
- Ein neuer Fall von Hummelbestäubung auf der Ionischen Insel Kefalonia: Ophrys mavromata (Orchidaceae) J. Eur. Orch. 50 (2-4): pp247–263.
- Paulus, H.F. 2007
- Wie Insekten-Männchen von Orchideenblüten getäuscht werden - Bestäubungstricks und Evolution in der mediterranen Ragwurzgattung Ophrys . Denisia 20: 255-294.
- Paulus, H.F. 1997
- Signale in der Bestäuberanlockung: Weibchenimitation als Bestäubungsprinzip bei der mediterranen Orchideengattung Ophrys. Verhandlungen der zoologisch-botanischen Gesellschaft Österreich 134: 133-176.
- Paulus, H.F. and Gack, C. 1990
- Pollination of Ophrys (Orchidaceae) in Cyprus. Plant Systematics and Evolution 169: 177-207.
- Paulus, H.F. and Salkowski, E-H. 2007
- Bestäubungsbiologische Untersuchungen an Winterorchideen auf der Ägäis-Insel Kos (Orchidaceae und Insecta, Hymenoptera, Apoidea). Berichte aus den Arbeitskreisen Heimische Orchideen 24(2): 4 – 30.
- Pauly A, Patiny S. 2015
- Atlas of the genus Dufourea. Mons: Atlas Hymenoptera. [cited 2016 Dec 20]. Available from: http://www.zoologie.umh.ac.be/hymenoptera/page.asp?ID=191
- Pauly A. 2016
- Le genre Vestitohalictus Blüthgen, 1961. Mons: Atlas Hymenoptera. [cited 2016 Dec 20]. Available from: http://www.atlashymenoptera.net/page.asp?id=97
- Pauly, A. & Belval, S. 2017
- Atlas des Halictidae de France (Hymenoptera: Apoidea), Belgian Journal of Entomology. 53: 1-34
- Pauly, A. & Michez, D. 2015
- Lasioglossum mandibulare. The IUCN Red List of Threatened Species 2015: e.T19199747A43364289. Downloaded on 10 December 2017.
- Pauly, A. & Michez, D. 2015
- Lasioglossum collopiense. The IUCN Red List of Threatened Species 2015: e.T51020039A51080984. Downloaded on 07 October 2017.
- Pauly, A. & Michez, D. 2015
- Thrincohalictus prognathus. The IUCN Red List of Threatened Species 2015: e.T19198363A43362800. Downloaded on 16 April 2019.
- Pauly, A. & Michez, D. 2015
- Lasioglossum villosulum. The IUCN Red List of Threatened Species 2015: e.T19199832A43362952. Downloaded on 07 October 2017.
- Pauly, A., Devalez, J., Sonet, G., Nagy, Z.T., Boevé, J-L. 2015
- DNA barcoding and male genital morphology reveal five new cryptic species in the West Palearctic bee Seladonia smaragdula (Vachal, 1895) (Hymenoptera: Apoidea: Halictidae). Zootaxa 4034 (2): 257–290
- Pauly, A., Michez, D. & Nieto, A. 2013
- Panurginus tyrolensis. The IUCN Red List of Threatened Species 2013: e.T20426231A20426234. http://dx.doi.org/10.2305/IUCN.UK.2013-1.RLTS.T20426231A20426234.en. Downloaded on 15 April 2019.
- Pawlikowski, T. 2001
- Computer checklist of Apoidea (Hymenoptera) in Poland. Part 1 (excluding bibliography to distribution). Acta Universitatis Nicolai Copernici: 26.
- Pawlikowski, T. and Hirsch, J. 2002
- Bees (Hymenoptera: Apoidea) as indicators of xerisation processes in the lower Vistula Valley. Acta zoologica cracoviensia (Kraków) 45(4): 321-336.
- Pawlikowski, T., Barczak, T. and Bennewicz, J. 2008
- Bees (Hymenoptera: Apiformes) of the agricultural areas in the Lower Vistula valley. Journal of Apicultural Science 52(2): 67-79.
- Paxton,R.J.,Giovanetti,M.,Andrietti,F.,Scamoni,E.,and Scanni,B. 1999
- Mating in a primitively social bee, Andrena agilissima (Hymenoptera: Andrenidae). Ecol. Ethol. Evol. 11: 371-382.
- Peeters, T., Raemakers, I., van de Nieuwegiessen, J. and Kuper, J. 2006
- De rotsbehangersbij Megachile pilidens nieuw voor Nederland. Nederlandse Faunistische Mededelingen 25: 11-18.
- Peeters, T.M.J. and Reemer, M. 2003
- Bedreigde en verdwenen bijen in Nederlands (Apidae s.l.). Basisrapport met voorstel voor Rode Lijst. Stichting European Invertebrate Survey, Leiden.
- Peeters, T.M.J., H. Nieuwenhuijsen, J. Smit, F. van der Meer, I.P. Raemakers, W.R.B. Heitmans, K. van Achterberg, M. Kwak, A.J. Loonstra, J. de Rond, M. Roos & M. Reemer 2012
- De Nederlandse bijen (Hymenoptera: Apidae s.l.). Natuur van Nederland Naturalis Biodiversity Center & EIS Kenniscentrum Insecten en andere ongwervelden, Leiden.
- Peeters, T.M.J., I.P. Raemakers & J. Smit 1999
- Voorlopige atlas van de Nederlandse bijen (Apidae). European Invertebrate Survey Nederland, Leiden, 2
- Peeters, T.M.J., I.P. Raemakers & J. Smit 1999
- Voorlopige atlas van de Nederlandse bijen (Apidae). European Invertebrate Survey Nederland, Leiden.
- Peeters, T.M.J., I.P. Raemakers & J. Smit 1999
- Voorlopige atlas van de Nederlandse bijen (Apidae). European Invertebrate Survey Nederland, Leiden, 230 pp.
- Peeters, T.M.J., Nieuwenhuijsen, H., Smit, J., van der Meer, F., Raemakers, I.P., Heitmans, W.R.B., van Achterberg, C., Kwak, M., Loonstra, A.J., de Rond, J., Roos, M. and Reemer, M. 2012
- De Nederlandse bijen (Hymenoptera: Apidae s.l.).: 1-544.
- Peeters, T.M.J., Raemakers, I.P. and Smit, J. 1999
- Voorlopige atlas van de Nederlandse bijen (Apidae). European Invertebrate Survey Nederland, Leiden.
- Pekkarinen, A. 1999
- Oligolectic bee species and their decline in Finland (Hymenoptera: Apoidea). Proceedings of the XXIV Nordic Congress of Entomology: 151-156.
- Pekkarinen, A. 1997
- Oligolectic bee species in Northern Europe (Hymenoptera, Apoidea). Entomologica Fennica 8: 205-214.
- Pérez, J. 1895
- Espèces nouvelles de Mellifères de Barbarie. Diagnoses préliminaires: 1-64.
- Perez, J. M. 1890
- Catalogue des mellife`res du Sud-Ouest. Actes de la Societe linneenne de Bordeaux 44: 133–197. http://www.biodiversitylibrary.org/bibliography/16235A/summary.
- Perkins, R.C.L. 1919
- The British species of Andrena and Nomada. Trans. ent. Soc. London: 218-319.
- Pesenko Y. A. , J. Banaszak, V.G. Radchenko & T. Cierzniak 2000
- Bees of the Family Halictidae (Excluding Sphecodes) of Poland; Taxonomy, Ecology, Bionomics.Wydawnictwo Uczelniane
- Pesenko Y.A. and Astafurova, Y.V. 2003
- Annotated Bibliography of Russian and Soviet Publications on the Bees (Hymenoptera: Apoidea; excluding Apis mellifera): 1771-2002. Denisia, Linz, Austria.
- Pesenko, Y. 2005
- New data on the taxonomy and distribution of the Palaearctic halictids: genus Halictus Latreille (Hymenoptera: Halictidae). Entomofauna, Zeitschrift für Entomologie 26(18): 313-348.
- Pesenko, Y. 1972
- Contributions to the fauna and ecology of bees (Apoidea) in the Lower Don basin. Report 3. Phenology and trophic links of the Andrenidae. Zoology Zhurnal (Moscow) 51(8): 1196–1200.
- Pesenko, Y.A. 2004
- The phylogeny and classification of the tribe Halictini, with special reference to the Halictus genus-group (Hymenoptera: Halictidae). Zoosystematica Rossica 13: 83-113.
- Pesenko, Y.A. 1974
- Contributions to the fauna and ecology of bees (Hymenoptera, Apoidea) in the Lower Don basin. Report IV. The family Anthophoridae. Ent. Obozrenie 53 (2): 324–333.
- Pesenko, Y.A. and Radchenko, V.G. 1993
- The use of bees (Hymenoptera, Apoidea) for alfalfa pollination: the main directions and modes, with methods of evaluation of populations of wild bees and pollinator efficiency. Entomological Review 72 (2): 101–119.
- Pesenko, Yu A. 1995
- Synopsis of the bee fauna (Hymenoptera: Apoidea) of Russia and the neighbouring countries, with a list of oligolectic species. In: Banaszak J. (ed.), Changes in fauna of wild bees in Europe., pp. 45-52.
- Pesenko, Yu. 2005
- New data on the taxonomy and distribution of the Palaearctic halictids. Entomofauna Band 26, Heft 18: pp. 313-348
- Pesenko, Yu.A., Radchenko, V.G. and Kaygorodova, M.S. 1982
- The ecology of pollination in Strigosella grandiflora and Erysimum badghysi (Brassicaceae) by bees (Hymenoptera, Apoidea) in Badkhyz: estimation of the pressure of competitive relationships. Entomological Review 59(4): 58–73.
- Petanidou, T. 1994
- Nature conservation and pollination ecology in phrygana (garrigue of East Mediterranean). In: R, Jiménez-Peydró and M. A. Marcos-García (eds), Environmental Management and Arthropod Conservation , pp. 139-150. Valencia.
- Petanidou, T. 1991
- Pollination ecology in a phryganic ecosystem. Aristotelian University.
- Peters, D.S. 1970b. Die Synonymie von Osmia robusta (Nylander 1848
- und Osmia forsii Alfken 1924. Senckenbergiana biologica 51: 193-197.
- Pilāts V. (ed.). 2007
- Biodiversity in Gauja National Park. Sigulda, Gauja National Park Administration: 240.
- Pilats, V. 2007
- Biodiversity in Gauja National Park.
- Pittioni, B. 1950
- On the insect fauna of Cyprus. Results of the expedition of 1939 by Harald, Håkan and P. H. Lindberg. V. Hymenoptera aculeata I. Diploptera, Fossores und Apoidea der Insel Cypern. Societas Scientiarum Fennica. Commentationes Biologicae 10(12): 1-94.
- Pittioni, B. 1948
- Andrena (Andrenella) enslinella Stckht. und ihre Verwandten. (Hym. Apid.). - Annalen des Naturhistorischen Museums in Wien 56: 130-149.
- Pittioni, B. and Schmidt, R. 1943
- Die Bienen des südöstlichen Niederdonau. 2. Andrenidae und isoliert stehende Gattungen. — Niederdonau. Natur u. Kultur 24: 1-83.
- Pittioni, B. and Stoeckhert, E. 1950
- Über einige neue und verkannte Andrena-Arten (Hymenoptera, Andrenidae). Beiträge zu Kenntnis paläarktischer Apiden III. Annalen des Naturhistorischen Museums in Wien 57: 284-295.
- Pittioni, B., Kuhlmann, M., Notton, D., Moeller, K., Funnell, J. and Baker, E. 2014
- The Pittioni Bee Collection. (Accessed: 2014.05.16).
- Pittioni, B., Kuhlmann, M., Notton, D., Moeller, K., Funnell, J. and Baker, E. 2014
- The Pittioni Bee Collection. (Accessed: 2017.10.31).
- Pittioni, B., Kuhlmann, M., Notton, D., Moeller, K., Funnell, J. and Baker, E. 2014
- The Pittioni Bee Collection. (Accessed: 2017.11.28).
- Pittioni, B., Kuhlmann, M., Notton, D., Moeller, K., Funnell, J. and Baker, E. 2014
- The Pittioni Bee Collection. (Accessed: 2017.12.26).
- Pittioni, B., Kuhlmann, M., Notton, D., Moeller, K., Funnell, J. and Baker, E. 2014
- The Pittioni Bee Collection. (Accessed: 2018.01.15).
- Pittioni, B., Kuhlmann, M., Notton, D., Moeller, K., Funnell, J. and Baker, E. 2014
- The Pittioni Bee Collection. (Accessed: 2017.11.17).
- Pittioni, B., Kuhlmann, M., Notton, D., Moeller, K., Funnell, J. and Baker, E. 2014
- The Pittioni Bee Collection. (Accessed: 2017.11.27).
- Planner, A.-T. 2016
- Wildbienen in Wiener Parks und Schauga¨rten: Diversita¨t und Forderungsmoglichkeiten. Masterarbeit, Universitatfur Bodenkultur, Wien. DOI: 10.13140/RG.2.1.2970.9208.
- Plateaux-Quénu C., Plateaux, L. and Packer, L. 1989
- Biological notes on Evylaeus villosulus (K.) (Hymenoptera Halictidae), a bivoltine, largely solitary halictine bee. Insectes Sociaux 36 : 245-263.
- Plateaux-Quénu, C. 1962
- Biology of Halictus marginatus Brullé. J. Apic. Res. 1:41–51
- Plateaux-Quénu, C. 1960
- Nouvelle preuve d’un déterminisme imaginal des castes chez Halictus marginatus Brullé. C. R. Acad. Sci. 250:4465–4466.
- Plateaux-Quénu, C. 1959
- Un nouveau type de société d’insectes: Halictus marginatus Brullé. Ann. Biol. 35:325–444.
- Plateaux-Quénu, C. and Plateau L. 1987
- Présence de fondatrices géantes dans deux populations d' Evylaeus villosulus (K.) (Hym. Halictinae). Annales des Sciences Naturelles, Zoologie, Paris 8: 259-266.
- Plateaux-Quénu, C. and Plateaux L. 1993
- Dimorphisme des femelles dans une population d' Evylaeus villosulus (Kirby) (Hym. Halictinae). Bulletin de la Société Zoologique de France 118 : 387-393.
- Ponchau, O., Iserbyt, S., Verhaeghe, J.C. and Rasmont, P. 2006
- Is the caste-ratio of the oligolectic bumblebee Bombus gerstaeckeri Morawitz biased to queens (Hymenoptera: Apidae)? Annales de la Société entomologique de France (n.s.) 42(2): 207-214.
- Ponomareva A.A. 1978
- Superfamille Apoidea (apoïdes). Clé de détermination des familles de la Superfamille Apoidea. Clé de détermination des genres. pp.279-292 in: G.S.Medvedeva, Opredelitel' nasekomykh evropeyskoy chasti S.S.S.R. III. Pereponchatokrylye. Akademii Nauk S.S.S.R., Leningrad, 584 pp. Traduction en français par A.Descamps, Université de Mons-Hainaut.
- Ponomareva, A. A. 1962
- On bees as pollinators of some steppe plants in Central Kazakhstan. Revue d'Entomologie de l'URSS 41(1): 76-82.
- Ponomareva, A.A. 1967
- On trophic links of some bees of the subfamily Anthophorinae and of main pollinators (Hymenoptera, Apoidea) of leguminous plants in central Kazakhstan and Middle Asia. Trudy Zoologicheskogo Instituta Akademii Nauk SSSR 38 : 330–365.
- Ponomareva, A.A. 1960
- Bee pollinators of leguminous plants in western Kopet Dagh Mts. Transactions of Zoological Institute, Academy of Sciences of the USSR (Leningrad) 27: 94–166.
- Popov, M. 1951
- Boraginaceae novae. Novosti sistematiki vysshikh rasteniy 14: 310.
- Popov, V. B. 1954
- On the fauna of bees (Hymenoptera, Apoidea) in the southern part of the Western Kazakhstan Province. Trudy Zoologicheskogo Instituta Akademii Nauk SSSR 16: 351-373.
- Popov, V. V. 1967
- The bees (Hymenoptera, Apoidea) of Iran. Trudy zool. Inst. Leningr. 43: 184-216.
- Popov, V.B. 1958
- On three subgeneric andrenid groupings (Hymenoptera, Andrenidae). . Trudy Vsesoyuznogo Entomol. Obshchestva 46: 109-161.
- Popov, V.B. 1952b
- Bee fauna (Hymenoptera, Apoidea) of south-western Turkmenia and its landscape distribution. Trudy Zoologicheskogo Instituta Akademii Nauk SSSR (Leningrad [St. Petersburg]) 10: 61-117.
- Popov, V.B. 1967a
- The bees (Hymenoptera, Apoidea) of Middle Asia and their associations with angiosperm plants. Trudy Zoologiceskzo Instituta Akademija Nauk SSSR (Leningrad [St. Petersburg]) 38: 11-329.
- Popov, V.B. 1956
- The bees, their associations with angiosperm plants and the problem of alfalfa pollination. Entomologicheskoe Obozrenie 35(3): 582–598.
- Popov, V.B. 1944
- Some parasitic bees from Cyprus (Hymenoptera, Apoidea). Proceedings of the Royal Entomological Society, London (B) Volume 13, Issue 9-10. pp.120–124
- Popova, L. M. 1983
- A contribution to the knowledge of Andrenid bees (Apoidea, Andrenidae) biology in the Middle Volga basin. Vestnik Zoology 3: 46–50.
- Popova, L.M. 2008
- Andrena rosae. In: Fedorov, D.V. et al. (ed.), Red Book of the Ulyanovsk region, pp. 508. Ulyanovsk.
- Popova, L.M. 2008
- Andrena potentillae. In: D.V. Fedorov. et al. (ed.), Red Book of the Ulyanovsk region, pp. 508. Artichoke, Ulyanovsk.
- Potapov G.S., et al 2017
- An integrative taxonomic approach confrms the valid status of Bombus glacialis, an endemic bumblebee species of the High Arctic Polar Biology https://doi.org/10.1007/s00300-017-2224-y
- Potts, S.G., Praz, C., Quaranta, M., Radchenko, V.G., Scheuchl, E., Smit, J., Straka, J., Terzo, M., Tomozii, B., Window, J. and Michez, D. 2014
- European Red List of bees. Luxembourg: Publication Office of the European Union.
- Praz, C., Müller, A., Genoud, D. 2019
- Hidden diversity in European bees: Andrena amieti sp. n., a new Alpine bee species related to Andrena bicolor (Fabricius, 1775) (Hymenoptera, Apoidea, Andrenidae). Alpine Entomology 3: 11-38. https://doi.org/10.3897/alpento.3.29675
- Praz, C.J. 2017
- Subgeneric classification and biology of the leafcutter and dauber bees (genus Megachile Latreille) of the western Palearctic (Hymenoptera, Apoidea, Megachilidae). Journal of Hymenoptera Research, 55: 1–54. DOI: https://doi.org/10.3897/ jhr.55.11255
- Pressehintergrund. 2012
- Naturschutz/ Artenschutz/ Rote Liste. Rote Liste, Band 3 – Wirbellose Tiere (Teil 1). . Bundesamt für Naturschutz. Bonn: 1-8.
- Pridal, A. 2004
- Checklist of the bees in the Czech Republic and Slovakia with comments on their distribution and taxonomy (Insect: Hymenoptera: Apoidea). Acta Universitatis agriculturae et silviculturae mendelianae brunensis, 52(4): 29-65.
- Přidal, A. 2004
- Checklist of the bees in the Czech Republic and Slovakia with comments on their distribution and taxonomy (Insecta: Hymenoptera: Apoidea). Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis 4: 29-66.
- Přidal, A. and Veselý, P. 2011
- Changes in the composition of the bee populations of the Mohelno Serpentine Steppe after 70 years (Hymenoptera: Apiformes). Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis 59(6): 291–311.
- Přidal, A. and Vesely, P. 2011
- Changes in the composition of the be populations of the Mohelno Serpentine Steppe after 70 years (Hymenoptera: Apiformes). Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis 59(6 ): 291-311.
- Priesner, H. 1957
- A review of the Anthophora species of Egypt. Bulletin de la Société Entomologique d’Égypte 41: 1-115.
- Priore, R. 1982
- La collezione degli Apoidea (Hymenoptera) dell'Istituto di entomologia Agraria di Portici. V. Andrena Fabr. Bollettino del Laboratorio di Entomologia Agraria "Filippo Silvestri" di Portici 39: 103-122.
- Priore, R. 1983
- La collezione degli Apoidea (Hymenoptera) dell'Istituto di Entomologia Agraria di Portici. VI. Andrena Fabr. Bollettino Laboratory Entomology Agriculture F. Silvestri Portici 40 : 159-178.
- Prishchepchik, O.V. 2000
- The fauna and ecology of bees (Hymenoptera, Apoidea) of Minsk Hills. Belarusian Research Institute of Plant Protection, Minsk.
- Proschalykin, M. Yu, Lelej, A.S., Kupianskaya, A.N., Editor(s): Storozhenko, S.Yu. 2004
- Flora and fauna of Sakhalin Island. (Material of International Sakhalin Project). Part 1. pp: 154-192
- Proshchalykin M.Y. 2004
- A check list of the bees (Hymenoptera, Apoidea) of the southern part of the Russian Far East. Far Eastern Entomologist 143: 1-19.
- Proshchalykin, M. Y. 2010
- The short-tongued bees (Hymenoptera, Apoidea: Colletidae, Andrenidae, Halictidae, Melittidae) of Transbaikalia. Evraziatskii Entomologicheskii Zhurnal 9(3): 508-514.
- Proshchalykin, M.Y. and Kuhlmann, M. 2012
- The bees of the genus Colletes Latreille 1802 of the Ukraine, with a key to species (Hymenoptera: Apoidea: Colletidae). Zootaxa 3488: 1-40.
- Proshchalykin, M.Y. and Shlyakhtenok, A.S. 2009
- Contribution to the bee fauna (Hymenoptera, Apoidea) of Pripyatski National Park]. Natural Ressources of Pripyatski National Park and especially protected natural areas of Belarus , pp. 333-335.
- Puglisi, A., Caffo, S., Leonardi, M., Pennisi, F., Perricone, G., Signorello, L., Spampinato, R. G., Spina, S. E., Zappalà, A., Bruno, G., Caltabiano, A., Cavalli, C., Di Paola, G. and Torrisi, M. G. 2012
- Nomination of Mount Etna for inscription in the World Natural Heritage List Unesco. Il Ministero dell'Ambiente e della Tutela del Territorio e del Mare.