Chkhitunidze M, Khvedelidze I, Dzhondzoladze N. Assessment of the WKB method error by the Gratton kinematic model for the Earth’s magnetic boundary layer task. GGS [Internet]. 2014 Aug. 11 [cited 2025 Jun. 6];16:47-52. Available from: https://ggs.openjournals.ge/index.php/GGS/article/view/662