B. C.  Ratcliffe, ?Trox hamatus Robinson (Troginae) using a Canthon (Scarabaeinae) brood ball and new records of North American Trox (Coleoptera: Scarabaeidae)?, Transactions of the Nebraska Academy of Sciences, vol. XI, pp. 53-55, 1983.

B. C.  Ratcliffe, ?A new species of Aphodius (Coleoptera: Scarabaeidae: Aphodiinae) from Nebraska?, Transactions of the Nebraska Academy of Sciences, vol. XVI, pp. 87-89, 1988.