@ARTICLE{Hammond2001NaturalSOW,
  author =   {Tracy Hammond},
  title =    {Natural Sketch Recognition in UML Class Diagrams},
  OPTjournal =   {MIT Student Oxygen Workshop},
  journal =  {Proceedings of the MIT Student Oxygen
                  Workshop},
  year =     {2001},
  OPTkeywords =  {General Sketch Recognition}
}