| Auteur(s) | Müller, A. |
| Jaar | 1996 |
| Titel | Convergent evolution of morphological specializations in Central European bee and 211 honey wasp species as an adaptation to the uptake of pollen from nototribic flowers 212 (Hymenoptera, Apoidea and Masaridae). Biol. J. Linn. Soc. 57:235-252. |