P. Sienkiewicz and J. Lipa, “Clitellocephalus ophoni (Tuzet et Ormières, 1956) (Apicomplexa: Eugregarinida: Gregarinidae) recorded in Poland on strawberry seed beetle Harpalus(Ophonus) rufipes (De Geer, 1774) (Coleoptera: Carabidae)”, BIOLET, vol. 46, no. 1, pp. 43–50, Jul. 2010.