D. N. . Katongole, K. . Nyeinga, D. . Okello, D. . Mukiibi, J. . Mubiru, and Y. . Kisira, “Spatial and Temporal Solar Potential Variation Analysis in Uganda Using Measured Data”, Tanz. J. Sci., vol. 49, no. 1, pp. 1–14, Mar. 2013.