Bees of the family Halictidae (excluding Sphecodes) of Poland: taxonomy, ecology, bionomics. - IX
Pesenko, Y., A., Banaszak, J., Radchenko, V., G. E., Cierzniak, & T (2000). Bees of the family Halictidae (excluding Sphecodes) of Poland: taxonomy, ecology, bionomics. - IX. Bydgoszcz, 348p.