“GEOSPATIAL ESTIMATION OF ROOFTOP SOLAR PHOTOVOLTAIC POTENTIAL IN CALABAR MUNICIPAL, CROSS RIVER STATE, NIGERIA”. FUDMA JOURNAL OF SCIENCES 7, no. 3 (June 30, 2023): 272–281. Accessed September 17, 2025. http://162.254.38.185/index.php/fjs/article/view/1840.