Yúñez Naude, A., J. Arellano González, and J. Méndez Navarro. “Welfare Changes from 1990 to 2005: A Spatial Study for Mexico”. Estudios Económicos De El Colegio De México, vol. 25, no. 2, July 2010, pp. 363-06, doi:10.24201/ee.v25i2.109.