For citations:

Stamat I.P., Lisachenko E.P. EFFECTIVE SPECIFIC ACTIVITY OF NATURAL RADIONUCLIDES FOR THE NORM BELONGED TO 238U AND 232TH SERIES BEING IN THE STATE OF DISTURBED RADIOACTIVE EQUILIBRIUM. Radiatsionnaya Gygiena = Radiation Hygiene. 2008;1(1):27-31. (In Russ.)