Gemstone silica veins in Kremenjača Volcanic rocks (Serbia). Geologica Macedonica, [S. l.], v. 28, n. 1, p. pp. 33–38, 2014. Disponível em: https://js.ugd.edu.mk/index.php/GEOLMAC/article/view/852. Acesso em: 2 may. 2026.