Carvajal Acosta, J. P., R. A. Urbina Mojica, L. C. D. Baron Mosquera, C. Paez-Rueda, and A. Fajardo. “Design and Implementation of a Cost-Effective Object Tracking System Based on LoRa, Firebase, and Mapbox”. IEEE Latin America Transactions, vol. 20, no. 7, June 2022, pp. 1075-84, https://latamt.ieeer9.org/index.php/transactions/article/view/6253.