1. Addison, T., & Heshmati, A. (2003). The new global determinants of FDI flows to developing countries. World Institute for Development Economic Research (WIDER), Discussion Paper, No. 2003/45, WIDER, Helsinki.
2. Aker, J. C. (2008). Does digital divide or provide? The impact of mobile phones on grain markets in Nigeria. BREAD Working Paper, No. 177. The Bureau for Research and Economic Analysis of Development, Duke University, Durham.
3. Aker, J. C., & Mbiti, I. M. (2010). Mobile phones and economic development in Africa. Journal of Economic Perspectives, 24(3), 207–232.
4. Al-mutawkkil, A., Heshmati, A., & Hwang, J. (2009). Development of telecommunication and broadcasting infrastructure indices at the global level. Telecommunications Policy, 33(1), 176–199.
5. Andrianaivo, M., & Kpodar, K. (2012). Mobile phones, financial inclusion, and growth. Review of Economics and Institutions, 3(2), 1–30.