Prokina, K., Zagumyonnyi, D., Tikhonenkov, D. (2019). 
	Centrohelid Heliozoans (Centroplasthelida Febvre-Chevalier et Febvre, 1984) from Different Types of Freshwater Bodies in the Middle Russian Forest-steppe. Acta Protozoologica, 2019, 245-266. doi: https://doi.org/10.4467/16890027AP.18.018.10094