Effect of additional "clean” feeding on 90Sr and 137Cs content in prussian carp (Carassius gibelio) in the Chornobyl exclusion zone - P. M. Pavlenko; O. V. Kashparova; Ye. Levchuk; M. O. Hrechaniuk; I. M. Hudkov; V. O. Kashparov (Nuclear physics and atomic energy, 2021)