Plutonium in soils, bottom sediments and lichen near peaceful nuclear explosion sites in the Republic of Sakha (Yakutia) - Gedeonov, A. D.; Kuleshova, I. N.; Petrov, E. R.; Savopulo, M. L.; Shkroev, V. Yu.; Shuvalov, B. N.; Alexeev, V. G.; Arkhipov, V. I.; Burtsev, I. S. (Journal of Radioanalytical and Nuclear Chemistry, 1997)