Taxonomic revision of Tatria Kowalewski, 1904 (Cestoda: Amabiliidae): redescriptions of T. appendiculata Fuhrmann, 1908 and T. duodecacantha Olsen, 1939, a key and an amended diagnosis of Tatria (sensu stricto) - Vasileva, G. P.; Gibson, D. I.; Bray, R. A. (Systematic Parasitology, 2003)