Gómez Torres, E., Herrera-Herrera, N. and Díaz, M.P. 2017. An Approach to the Optimization of Mobile Payments for the Transport System using (NFC) through Cloud Computing. Enfoque UTE. 8, 1 (Feb. 2017), pp. 31 - 45. DOI:https://doi.org/10.29019/enfoqueute.v8n1.130.