Budhiyanto, Aris, Jatmika Adi Suryabrata, and Soeleman Saragih. 2018. “STUDY OF SHADING DEVICE BUILDING-INTEGRATED PHOTOVOLTAIC PERFORMANCE ON ENERGY SAVING”. Journal of Urban and Environmental Engineering 11 (2):202-7. https://doi.org/10.4090/juee.2017.v11n2.202-207.