Biology, pathology and evolution of coccidia of the genus Sarcocystis in African viperids : Ph. D. thesis / Jan Šlapeta.  Brno : Department of Parasitology Faculty of Veterinary Medicine University of Veterinary and Pharmaceutical Sciences, 2002. 50, [19], 23 l., 3 l. obr. příl.il. ;. ISBN 80-7305-444-2