Bee Traits: Flowers of Boraginaceae (Symphytum, Onosma, Cerinthe) and Andrena symphyti (Hymenoptera-Andrenidae): morphology, pollen portioning, vibratory pollen collection, nectar robbing. Phyton, 50(2), pp.145-180.

Auteur(s)	Teppner, H.
Jaar	2011
Titel	Flowers of Boraginaceae (Symphytum, Onosma, Cerinthe) and Andrena symphyti (Hymenoptera-Andrenidae): morphology, pollen portioning, vibratory pollen collection, nectar robbing. Phyton, 50(2), pp.145-180.