Todua, Maya, and Goderdzi Didebulidze. “Galactic Cosmic Rays Flux and Geomagnetic Activity Coupling With Cloud Covering in Abastumani”. Journals of Georgian Geophysical Society 16 (August 11, 2014): 82–88. Accessed April 9, 2025. https://ggs.openjournals.ge/index.php/GGS/article/view/665.