R. Umar, W. Jannah Awang, S. Nadhirah Berzanji, N. Farhana Abd Majed, M. Khairul Amri Kamarudin, and M. Garba Abdullahi, “Spatial Model of Sky Brightness Magnitude in KUSZA Observatory, UniSZA”, IJET, vol. 7, no. 2.15, pp. 13–18, Apr. 2018, doi: 10.14419/ijet.v7i2.15.11189.