Skeivalas, Jonas, Andrzej Sas-Uhrynowski, and Romuald Obuchovski. “Analysis of Earth’s Magnetic Field Changes by Correlation of Its Parameters”. Geodesy and Cartography 34, no. 3 (August 3, 2012): 88-91. Accessed December 2, 2024. https://ijspm.vgtu.lt/index.php/GAC/article/view/10888.