Historical reconstruction of Plutonium contamination in the Swiss-Italian AlpsJ. Gabrieli, G. Cozzi, P. Vallelonga, M. Schwikowski, M. Sigl, C. Boutron and C. BarbanteE3S Web of Conferences, 1 (2013) 14001DOI: https://doi.org/10.1051/e3sconf/20130114001