Demóstenes Zegarra Rodríguez, Renata Lopes Rosa, Graça Bressan. A billing system model for voice call service in cellular networks based on voice quality. In IEEE International Symposium on Consumer Electronics, ISCE 2013, Hsinchu City, Taiwan, June 3-6, 2013. pages 89-90, IEEE, 2013. [doi]
Abstract is missing.