M. G. López-Toxqui, B. Peña-Olvera, J. A. Méndez-Espinoza, J. S. Escobedo-Garrido, and T. Martínez-Saldaña, “Migration and remittances: contributions to local development in regions of Puebla and Veracruz, México”, ASYD, vol. 8, no. 2, pp. 193–208, Apr. 2011.