Mihai Valentin Herbei (2016). MODERN METHODS OF OPTIMIZATION UNDERGROUND TOPOGRAPHIC NETWORKS. SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 16th International Multidisciplinary Scientific GeoConference SGEM2016, Informatics, Geoinformatics and Remote Sensing. https://doi.org/10.5593/sgem2016/b22/s09.058