Chamim, A. N. N., R. A. A. Hasibi, A. Jamal, S. Aprilia, Y. Jusman, and J. Jeckson. “Analysis of Potential Alternative Energy Sources for Electricity Conservation in Yogyakarta State Finance Building”. Journal of Electrical Technology UMY, vol. 3, no. 3, Sept. 2019, pp. 98-105, doi:10.18196/jet.3360.