Bezvesilnaya, E., A.G. Tkachuk, L. Chepyuk, and K.S. Kozko. 2015. “Modern Gravimeters of Aviation Gravimetric System”. Geofizicheskiy Zhurnal 37 (2):86-94. https://doi.org/10.24028/gzh.0203-3100.v37i2.2015.111309.