TY - CPAPER AU - Vladimir A. Sapunov TI - GROUND OVERHAUSER DNP GEOPHYSICAL DEVICES T2 - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 15th International Multidisciplinary Scientific GeoConference SGEM2015, SCIENCE AND TECHNOLOGIES IN GEOLOGY, EXPLORATION AND MINING PY - 2015 DO - 10.5593/sgem2015/b11/s1.027 PB - Stef92 Technology ER -