Yuli Prasetyo, Budi Triyono and Hendrik Kusbandono 2020. Penerapan Smart Relay Untuk Penentuan Posisi Sudut Panel Surya Dengan Metode Astronomi. JEECAE (Journal of Electrical, Electronics, Control, and Automotive Engineering). 5, 2 (Nov. 2020), 39–41. DOI:https://doi.org/10.32486/jeecae.v5i2.322.