@Article{SCP2002,
  author =	 {D{\'a}niel Varr{\'o} and Gergely Varr{\'o} and
                  Andr{\'a}s Pataricza},
  title =	 {Designing the Automatic Transformation of Visual
                  Languages},
  volume =       44,
  number =       2,
  publisher =    {Elsevier},
  pages =        {205--227},  
  journal =	 {Science of Computer Programming},
  year =	 {2002},
  month =	 {August}
}