Bukleski, Miha. 2020. “INFRA R ED SPECULAR REFLECTANCE SPECTRA OF PRESSED POLYCRYSTALLINE SAMPLES OF ALUMS − COMPARISON WITH SINGLE CRYSTAL SPECTRA”. Geologica Macedonica 34 (1), 5-14. https://js.ugd.edu.mk/index.php/GEOLMAC/article/view/3562.