Environmental radioactivity in the European Community / DG ENER, DG JRC / 35 (2012/2014) / edited by: M. De Cort, T. Tollefsen, M. Marin Ferrer, J. C. De La Rosa Blul, S. Vanzo, M.A. Hernandez, Ceballos, G. Cinelli, E. Nweke, B. Rood, L. De Felice, S. Martino, P.V. Tognoli (European Commission, Joint Research Centre (JRC), Ispra, Italy and Petten, The Netherlands), V. Tanner (European Commission, DG Energy (DG ENER), Luxembourg)