Modelling seasonal variations of natural radionuclides in agricultural soilsI. Guagliardi, G. Buttafuoco, N. Ricca, M. G. Cipriani, D. Civitelli, R. Froio, A. L. Gabriele and R. De RosaE3S Web of Conferences, 1 (2013) 08009DOI: https://doi.org/10.1051/e3sconf/20130108009