http://www.dgp.unc.edu.ar/operaciones.blog/wp-content/uploads/2013/12/EXP-UNC50430-2013.doc
http://www.dgp.unc.edu.ar/operaciones.blog/wp-content/uploads/2013/12/NOTA_DOPI.pdf
http://www.dgp.unc.edu.ar/operaciones.blog/wp-content/uploads/2013/12/EXP-UNC-0050430-2013.pdf
