1. Relationship between fungus and alga in the lichen Cladonia cristatella Tuck;Ahmadjian;Nature,1981
2. Phylogeny and the evolution of plant-animal interactions;Armbruster;BioScience,1992
3. Biologie der Hymenopteren
4. Die Pollensammelapparate der beinsammelnden Bienen;Braue;Jenaische Z. Nat. Wiss.,1913
5. Phylogeny and classification of the aculeate Hymenoptera, with special reference to Mutillidae;Brothers;Univ. Kansas Sci. Bull.,1975