Records of abnormal tadpoles of Bufo bufo near Yailu from Lake Teletskoye is belonging to the records of severe cases of the anomaly P in toads, and these findings are the first and unique report of heavy cases of the anomaly P in toads:
Yakovlev, V. A. (1984). Amphibians and reptiles of Altai Nature Reserve (PhD thesis), 161.
Photo from this place (by Dr. Elena A. Gerasimova). Expedition in September, 2023