Calin, M. R.; Calin, M. A.; Vlase, S.; Radulescu, I. Advanced materials in experimental equipments for absolute measurement of X and gamma-ray exposure rate with free-air and cavity ionization chambers. Journal of Optoelectronics and Advanced Materials, 14(3-4), 282-286, 2012

Calin, M. R.; Calin, M. A.; Simionca, G.; Mera, O. Indoor radon levels and natural radioactivity in Turda salt mine, Romania. Journal of Radioanalytical and Nuclear Chemistry, 292(1), 193-201, 2012, DOI: 10.1007/s10967-011-1394-2

Calin, M. R.; Zoran, M.; Calin, M. A. Radon levels assessment in some Northern Romanian salt mines. Journal of Radioanalytical and Nuclear Chemistry, 293(2), 565-572, 2012, DOI: 10.1007/s10967-012-1686-1