Scolex morphology of two sympathic species of Eubothrium Nybelin, 1922 (Cestoda: Pseudophyllidea), parasites of lake trout (Salmo trutta m. lacustris) and Arctic char (Salvelinus alpinus) in two Alpine lakes in France: a comparative study / R. Kuchta ... [et al.]. Helminthologia Roč. 36, č. 2 (1999), s. 123