Vadim Zhmud, Yury D. Fomin, Л. Дімітров, Sergei Panov, V. M. Semibalamut. "SIGMA-DELTA PHASE LOCKING LOOP FOR GEOPHYSICAL RESEARCH." SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 20th International Multidisciplinary Scientific GeoConference Proceedings SGEM 2020, Informatics, Geoinformatics and Remote Sensing (2020): 559-566. https://doi.org/10.5593/sgem2020/2.1/s08.072