Popielarczyk, Dariusz. "ACCURACY OF VERTICAL TRAJECTORY DETERMINATION OF HYDROGRAPHIC SURVEY UNIT USING ROBOTIZED TOTAL STATION." SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 16th International Multidisciplinary Scientific GeoConference SGEM2016, Informatics, Geoinformatics and Remote Sensing, 2016, pp. 39-46. https://doi.org/10.5593/sgem2016/b22/s09.006