Calorimetric Non-Destructive Assay of Large Volume and Heterogeneous Radioactive Waste Drums W. R. Kubinski, C. Carasco, D. Kikola, C. Mathonat, D. Ricard, D. Tefelski and H. Tietze-Jaensch EPJ Web Conf., 225 (2020) 06003 Published online: 20 January 2020 DOI: 10.1051/epjconf/202022506003