Yakimenko, I. I., N. G. Styervoyedov, A. F. Shchus, and G. M. Onyshchenko. “RADON-222 DETECTION USING BETA-DECAY PRODUCTS”. East European Journal of Physics, Vol. 3, no. 2, Aug. 2016, pp. 65-69, doi:10.26565/2312-4334-2016-2-09.