The taxonomic status of Proteocephalus dubius La Rue, 1911 (Cestoda: Proteocephalidae), a puzzling parasite of perch (Perca fluviatilis l.)T. Scholz, V. Hanzelová and V. ŠnábelParasite, 2 2S (1995) 231-234DOI: https://doi.org/10.1051/parasite/199502s2231