Carcinogenic Risk of Exposure to Radon Daughters Associated With Radon Spas I. Uzunov, F. Steinhausler, E. Pohl Health Phys. 41, No. 6, pp. 807-813 (December 1981)
Sewage Sludge – A Possible Indicator for Radionuclides Released to the Atmosphere from Nuclear Power Plants T. Ingemansson, S. Mattsson, B. Erlandsson Health Phys. 41, No. 6, pp. 815-822 (December 1981)