Enlaces:
[1] http://www.univ-paris-est.fr/fr/international-master-in-mathematics-and-computer-science-bezout-master/document-1104.html
[2] https://portalantiguo.unicauca.edu.co/versionP/printmail/5633
[3] https://portalantiguo.unicauca.edu.co/versionP/print/5633
[4] https://portalantiguo.unicauca.edu.co/versionP/documentos?categoria=94
[5] https://portalantiguo.unicauca.edu.co/versionP/documentos?tags[]=2322
[6] https://portalantiguo.unicauca.edu.co/versionP/javascript: history.back()