@inproceedings{Guerra07:gtvmt,
  author   = {Esther Guerra and Juan de Lara},
  title    = {Adding recursion to graph transformation},
  bootitle = {GTVMT '07: 6th International Workshop on Graph Transformation and Visual Modeling Techniques},
  year     = {2007},
  volume   = {6},
  series   = {Electronic Communications of the EASST},
  address  = {Braga (Portugal)},
}