J. E. Sánchez-Cano, W. X. Garcia-Quilachamin, J. Pérez-Véliz, J. Herrera-Tapia, and K. Atiencia-Fuentes, “Review of Methods to Reduce Energy Consumption in A Smart City Based On IoT and 5G Technology”, Int. J. Onl. Eng., vol. 17, no. 08, pp. pp. 4–21, Aug. 2021.