Radionuclides of building materials and radon concentrations in Belgrade dwellings / Dragana Popovic [et al.] Bibliogr.: p. 133. - Abstr. eng. In: Central European Journal of Occupational and Environmental Medicine. - ISSN 1219-1221. - 2000. 6. évf. 2-3. sz., p. 129-133. : ill.