Giniotis, Vytautas, Mindaugas Rybokas, and Petras Petroškevičius. “Investigations into the Accuracy of Angle Calibration”. Geodesy and Cartography 30, no. 3 (August 3, 2012): 65-70. Accessed January 9, 2025. https://jest.vgtu.lt/index.php/GAC/article/view/10992.