For citations:
Ramzaev V.P., Barkovsky A.N., Bernhardsson C., Mattsson S. Calibration and testing of a portable NaI(Tl) gamma-ray spectrometer-dosimeter for evaluation of terrestrial radionuclides and 137Cs contributions to ambient dose equivalent rate outdoors. Radiatsionnaya Gygiena = Radiation Hygiene. 2017;10(1):18-29. (In Russ.) https://doi.org/10.21514/1998-426X-2017-10-1-18-29