1. The mating behaviour of a boreal water beetle, Dytiscus alaskanus (Coleoptera Dytiscidae);Aiken;Ethol. Ecol. Evol.,1992
2. Filamentous structures in spermatic fluid of Drosophila melanogaster Meig;Bairati;J. Microsc.,1966
3. Die dopple Spermatozoen der Dytisciden;Ballowitz;Z. für Wiss. Zool.,1895
4. The morphological evolution of the Adephaga (Coleoptera);Beutel;Syst. Entomol.,2020
5. Preliminary studies of the spermatozoa and the male reproductive system of some whirligig beetles (Coleoptera: Gyrinidae);Breland;Entomol. News,1970