Petrovsky, A. P., Fedchenko, T. A., & Trachuk, A. Y. (2012). Use of topographic SRTM data to calculate the correction for the impact of terrain on the gravitational field. Geofizicheskiy Zhurnal, 34(6), 147–153. https://doi.org/10.24028/gzh.0203-3100.v34i6.2012.116721