Prorok, V. V., A. P. Ganushevich, T. I. Makarenko, V. V. Ostashko, L. V. Poperenko, and L. Y. Melnichenko. “Strontium and Calcium Relations in Plant and Soil Solution on Chornobyl-Affected Areas”. Ukrainian Journal of Physics, vol. 59, no. 3, Oct. 2018, p. 233, doi:10.15407/ujpe59.03.0233.