Preweda, Edward, Butryn, Krzysztof, Jasinska, Elzbieta. "THE AMBIGUITY OF THE RESULTS OF THE STRICT ADJUSTMENT OF HORIZONTAL GEODETIC NETWORKS." SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 16th International Multidisciplinary Scientific GeoConference SGEM2016, Informatics, Geoinformatics and Remote Sensing, 2016, pp. 609-616. https://doi.org/10.5593/sgem2016/b22/s09.079