Difficilina Simdyanov 2009

Simdyanov 2009. Difficilina cerebratuli gen. et sp. n. (Eugregarinida: Lecudinidae) - a new gregarine species from the nemertean Cerebratulus barentsi (Nemertini: Cerebratulidae). Parazitologiya (St. Petersburg), 43(4), July-August 2009: 273-287