TRAC, a collaborative computer tool for tracer-test interpretation A. Gutierrez, T. Klinka, D. Thiéry, E. Buscarlet, S. Binet, N. Jozja, C. Défarge, B. Leclerc, C. Fécamp, Y. Ahumada and J. Elsass EPJ Web of Conferences, 50 (2013) 03002 Published online: 28 May 2013 DOI: 10.1051/epjconf/20135003002