1. AIMP [Electronic resource], 2007. http://www.aimp.ru/.
2. Greater mole rat (Spalax microphtalmus) in anthropogenically transformed landscapes of Mordovia;A.V. Andreychev,2012
3. Andreychev, A.V., Kuznetsov, V.A., and Alpeev, M.A., Daily activity rhythms of the red fox (Vulpes vulpes) in reproduction period of forest zone in Saransk city, Russia, Austrian J. Tech. Nat. Sci., 2015, nos. 11–12, pp. 24–28.
4. AUDACITY [Electronic resource], 2015. http://www.audacityteam.org/.
5. Audiosound [Electronic resource], 2016. https://yadi.sk/d/oUnbN9pE3F7iwJ.