http://web.archive.org/web/20080804175759/http://www.xiranhua.com.mx/noticias08/nota09.htm
http://web.archive.org/web/20080707062555/http://www.purepechas.org/
http://web.archive.org/web/20080709035655/http://www.jornada.unam.mx/2008/06/07/index.php?section=politica&article=013n1pol
Note: check academia.edu for sources
