Cantú, Francisco, Scott Desposato, and Eric Magar. “Methodological Considerations for Students of Mexican Legislative Politics: Selection Bias in Roll-Call Votes”. Política y gobierno 21, no. 1 (August 14, 2014). Accessed October 13, 2026. http://politicaygobierno.cide.edu/index.php/pyg/article/view/18.