Boev, Ivan, and Blazo Boev. “SILICIC VOLCANISM ON KOZUF MAUNTAINS EVIDENCED BY TRIDIMITE AND PERLITE IN HIGH-SiO2 SEDIMENTARY ROCK AT ALSAR CALDERA”. Natural Resources and Technology 11, no. 11 (December 26, 2017): 33-41. Accessed April 23, 2024. https://js.ugd.edu.mk/index.php/NRT/article/view/1990.