Staňková, Hana, and Pavel Černota. “Application of Ott’s Mine Coordinate System in the past and in Present Day”. Geodesy and Cartography 39, no. 2 (June 28, 2013): 53-58. Accessed December 2, 2024. https://ijspm.vgtu.lt/index.php/GAC/article/view/4062.