Concentration of carbonate admixture from opalized tuff into one separate fraction. Geologica Macedonica, [S. l.], v. 30, n. 1, p. pp. 89–95, 2016. Disponível em: https://js.ugd.edu.mk/index.php/GEOLMAC/article/view/1434. Acesso em: 4 may. 2026.