Polyclithrum ponticum sp. n. (Monogenea:Gyrodactylidae:Polyclithrinae) from Mugil cephalus from the Black Sea and problems of suprageneric systematics of the gyrodactylids - Gerasev, P. I.; Dmitrieva, E. V.; Gaevskaya, A. V. (Parazitologiya, 2002)