@inproceedings{sgem2012s23v3016, title = {PROFESSIONAL CERTIFICATION IN ATD CZECH REPUBLIC, O.S.}, author = {Vlastimil Moni}, booktitle = {SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; SGEM2012 12th International Multidisciplinary Scientific GeoConference}, year = {2012}, pages = {}, publisher = {Stef92 Technology}, doi = {10.5593/sgem2012/s23.v3016} }