Ashjaee, M., Roomina, M. R., & Ghafouri-Azar, R. (1993). Estimating direct, diffuse, and global solar radiation for various cities in Iran by two methods and their comparison with the measured data. Solar Energy, 50, 441. https://doi.org/10.1016/0038-092X(93)90066-W
Chicago Style (17th ed.) CitationAshjaee, M., M. R. Roomina, and R. Ghafouri-Azar. "Estimating Direct, Diffuse, and Global Solar Radiation for Various Cities in Iran by Two Methods and Their Comparison with the Measured Data." Solar Energy 50 (1993): 441. https://doi.org/10.1016/0038-092X(93)90066-W.
MLA (9th ed.) CitationAshjaee, M., et al. "Estimating Direct, Diffuse, and Global Solar Radiation for Various Cities in Iran by Two Methods and Their Comparison with the Measured Data." Solar Energy, vol. 50, 1993, p. 441, https://doi.org/10.1016/0038-092X(93)90066-W.