@techreport{TR-IC-12-20,
   number = {IC-20-12},
   author = {Removed by the authors},
   title = {Removed by the authors},
   month = {junho},
   year = {2012},
   institution = {Institute of Computing, University of Campinas},
   note = {Removed by the authors.
    \par\selectlanguage{english}\textbf{Abstract}
       Removed by the authors.
  }
}