Schockaert, E. R.; Tessens, B. S.; Gobert, S.; Revis, N.; Artois, T. J. On the Genus Gallorhynchus Schockaert &Amp; Brunet, 1971 (Platyhelminthes, Kalyptorhynchia, Polycystididae) With the Description of Four New Species. Zootaxa 2017, 4227, 61–74.