J. Madathiparambil Jose, P. Čermák, I. Štekl, J. Čermák, M. Fiederle, A. Fauler, Y.A. Shitov, E. Rukhadze, V.B. Brudanin, N.I. Rukhadze et al.: Timepix background studies for double beta decay experiments. Journal of Instrumentation 6(11), C11030-C11030 (2011). doi:10.1088/1748-0221/6/11/C11030