1. Akopova, A.B., N.V.Victorova, J.V.Magradze, A.A.Moiseenko, K.M.Ovtanyam, K.I.Tumanyan. Autoradiographic study of radionuclides in the samples of plants and soils from the area of Chernobyl power station, ibid, p.23.
2. Brandt, R. Private Communication 27 March 1992.
3. Alpha emitters in Chernobyl Hot Particles;Broda;Radioch. Acta,1989
4. Natural Pu — tracks within the continental crust;Ganz;Radiochimica Acta,1991