Indoor Positioning and Monitoring System Using Smartphone and WLAN (IPMS). Journal of Engineering, [S. l.], v. 21, n. 09, p. 16–33, 2015. DOI: 10.31026/j.eng.2015.09.02. Disponível em: https://joe.uobaghdad.edu.iq/index.php/main/article/view/347.. Acesso em: 4 may. 2024.