Chesñevar, Carlos Iván, <a rel="nofollow" href="http://cs.uns.edu.ar/">Departament<span lang="es"> of Computer Science</span></a> <a rel="nofollow" href="http://cs.uns.edu.ar/">&amp; Engineering</a>, <a rel="nofollow" href="http://www.uns.edu.ar/">Universidad Nacional del Sur</, Argentina