Gómez Torres, Estevan, Nelson Herrera-Herrera, and Magí Paúl Díaz. 2017. “An Approach to the Optimization of Mobile Payments for the Transport System Using (NFC) through Cloud Computing”. Enfoque UTE 8 (1):pp. 31 - 45. https://doi.org/10.29019/enfoqueute.v8n1.130.