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