Idris, Ahmad Syahrin, et al. “GEO-FENCING LOCATION TRACKING SYSTEM USING IOT AND LORA LPWAN FOR COVID-19 MANDATORY SELF-QUARANTINE MONITORING”. PERINTIS EJournal, vol. 12, no. 2, Dec. 2022, pp. 56-68, doi:10.5281/zenodo.15875547.