Reference

Zdzislaw Raabe (1950): Uwagi o Urceolariidae (Ciliata-Peritrichga) skrzel ryb [= Remarques sur les urceolaries (Ciliata-Peritricha) des branchies des poissons; in Polish with French title] – 10th Int. Congr. of Protozoology, Sidney, 21-25 July 1997 – 5: 291 - 310.