1. The paleogene history of the western Siberian seaway - a connection of the Peri-Tethys to the Arctic Ocean;Akhmetiev;Austrian J. Earth Sci.,2012
2. A species-group revision and phylogenetic analysis of the cleptoparasitic bee genus Nomada Scopoli (Hymenoptera: Anthophoridae);Alexander,1989
3. Nomada phylogeny reconsidered (Hymenoptera: Anthophoridae) Nomada phylogeny reconsidered (Hymenoptera: Anthophoridae);Alexander;J. Nat. Hist.,1991
4. Species-groups and cladistic analysis of the cleptoparasitic bee genus Nomada (Hymenoptera: Apoidea);Alexander;The University of Kansas Science Bulletin,1994
5. A catalog of the species of Nomada (Hymenoptera: Apoidea) of the world;Alexander;The University of Kansas Science Bulletin,1994