| Auteur(s) | Pesenko, Y.A. and Radchenko, V.G. |
| Jaar | 1993 |
| Titel | 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. |