@article{009423353, title = "Six new species of Hysterocinetidae belonging to two new genera Metaptychostomum and Proptychostomum, endocommensal Ciliates of an Oligochaete worm in Cameroons", author = "Ngassam, P. and Grain, J.", year = "1997", journal = "Annales des Sciences Naturelles Zoologie et Biologie Animale", volume = "18", number = "2", pages = "41-49", url = "https://eurekamag.com/research/009/423/009423353.php" }