Gasmi, Farid; Ivaldi, Marc; Recuero Virto, Laura - C.E.P.R. Discussion Papers - 2009
We analyze demand for prepaid cellular voice and short message service (SMS) in South Africa by means of a demand-and-supply structural model based on a multinomial specification fitted to a cross-sectional data set on Vodacom customers collected in 2005. We find that consumers are very...