NAŠINCOVÁ, V., SCHOLZ, T., MORAVEC, F. Redescription of Petasiger exaeretus Dietz, 1909 and P. phalacrocoracis (Yamaguti, 1939) (Trematoda: Echinostomatidae), parasites of cormorants. Systematic Parasitology. 1994, 27(-), 139-147. ISSN 0165-5752. E-ISSN 1573-5192.