I. P. Stamat
Saint-Petersburg Research Institute of Radiation Hygiene after Professor P.V. Ramzaev, Federal Service for Surveillance on Consumer Rights Protection and Human Well-Being
Russian Federation

Doctor of Biological Sciences, head of natural sources dosimetry laboratory,

Mira St., 8, 191101, St. Petersburg

E. P. Lisachenko
Saint-Petersburg Research Institute of Radiation Hygiene after Professor P.V. Ramzaev, Federal Service for Surveillance on Consumer Rights Protection and Human Well-Being
Russian Federation

Candidate of Technical Science, Senior Research Scientist,

St. Petersburg

N. A. Koroleva
Saint-Petersburg Research Institute of Radiation Hygiene after Professor P.V. Ramzaev, Federal Service for Surveillance on Consumer Rights Protection and Human Well-Being
Russian Federation

Senior Research Assistant, 

St. Petersburg