Assimakopoulos, P. A., K. G. Ioannides, D. T. Karamanis, A. A. Pakou, K. C. Stamoulis, A. Vayanakis, and E. Veltsos. “Experimental Investigation of 137Cs Aging in Soil”. HNPS Advances in Nuclear Physics, vol. 3, Dec. 2019, pp. 231-3, doi:10.12681/hnps.2391.