Susanto, F. and Syafnidawati, S. 2018. Fast Tracking of Detection Offenders Smoking Zone Menggunakan Sensor MQ-2 Berbasis Internet of Things. Ultima Computing : Jurnal Sistem Komputer. 10, 1 (Jul. 2018), 5 - 8. DOI:https://doi.org/https://doi.org/10.31937/sk.v10i1.749.