Design and Implementation of Children Tracking System using IoT. Al-Nahrain Journal for Engineering Sciences, [S. l.], v. 22, n. 3, p. 172–179, 2019. DOI: 10.29194/NJES.22030172. Disponível em: https://nahje.journalpath.com/nahje/article/view/181. Acesso em: 12 apr. 2026.