MAHMOOD, Dr. jawad Radhi; MUHAMMED, Haider. Design and implementation of Smart Relay Based Two-axis Sun Tracking System. Iraqi Journal for Electrical and Electronic Engineering, [S. l.], v. 7, n. 1, p. 64–68, 2011. DOI: 10.37917/ijeee.7.1.12. Disponível em: https://ijeee.edu.iq/ijeee/article/view/154. Acesso em: 8 dec. 2025.