Chikhlyaev, Igor, and Alexander Fayzulin. “Materials for the Helminth Fauna of the Edible Frog <em>Pelophylax esculentus< Em> (Linnaeus, 1758) in the Volga Basin”. Biological Communications, no. 3, Sept. 2016, pp. 175–180, doi:10.21638/11701/spbu03.2016.329.