Skeivalas, Jonas, and Žilvinas Stankevičius. “The Connection of Ellipsoidal and Normal Heights When Applying the Collocation Method”. Geodesy and Cartography 30, no. 1 (August 3, 2012): 9-13. Accessed November 23, 2024. https://mla.vgtu.lt/index.php/GAC/article/view/11004.