Elena Peneva. "CLOSED FORMULAS FOR TRANSFORMATION FROM SPATIAL GEOCENTRIC TO GEODETIC COORDINATES." SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 21st SGEM International Multidisciplinary Scientific GeoConference Proceedings 2021, Informatics, Geoinformatics and Remote Sensing (2021): 129-136. https://doi.org/10.5593/sgem2021/2.1/s09.42