. "APPLICATION OF REMOTE SENSING TECHNIQUES ON ASTER DATA FOR ALTERATION ZONES EXTRACTION AND LITHOLOGICAL MAPPING OF ELFAWAKHIR – EL-SID AREA, CENTRAL EASTERN DESERT, EGYPT: AN APPROACH FOR GOLD EXPLORATION". Egyptian Journal of Geology, 62, 1, 2018, 133-150. doi: 10.21608/egjg.2018.216381