For citations:
Sednev K.A., Nekrasov V.A., Repin V.S. Universal calibration of a scintillation spectrometer with a NaI(Tl) detector when measuring 137Cs activity in counting samples of arbitrary density and volume. Radiatsionnaya Gygiena = Radiation Hygiene. 2021;14(4):96-102. (In Russ.) https://doi.org/10.21514/1998-426X-2021-14-4-96-102