Temporal variation in the prevalence of the crayfish plague pathogen, Aphanomyces astaci, in three Czech spiny-cheek crayfish populationsK. Matasová, E. Kozubíková, J. Svoboda, V. Jarošík and A. PetruseKKnowl. Managt. Aquatic Ecosyst., 401 (2011) 14DOI: https://doi.org/10.1051/kmae/2011029