Yúñez Naude, Antonio, Jesús Arellano González, and Jimena Méndez Navarro. 2010. “Welfare Changes from 1990 to 2005: A Spatial Study for Mexico”. Estudios Económicos De El Colegio De México 25 (2):363-406. https://doi.org/10.24201/ee.v25i2.109.