 [Universidad de Buenos Aires](http://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi) 

 [Universidad de Chile](http://www.tesis.uchile.cl/) 

 [Universidad Iberoamericana México](http://www.bib.uia.mx/gsdl/cgi-bin/library?site=localhost&amp;a=p&amp;p=about&amp;c=tespru&amp;l=es&amp;w=utf-8) 

 [Instituto Politécnico México](http://www.repositoriodigital.ipn.mx/) 

 [CaltechTHESIS](http://thesis.library.caltech.edu/) 

 [Carnegie-Mellon University](http://repository.cmu.edu/etd/) 

 [Columbia University](http://academiccommons.columbia.edu/) 

 [Georgia Institute of Technology](https://smartech.gatech.edu/) 

 [M.T.I. Theses](http://dspace.mit.edu/handle/1721.1/7582) 

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