@Inproceedings{EPTCS48.8,
  author    = {Alves, Sandra and Fern\'andez, Maribel and Mackie, Ian},
  year      = {2011},
  title     = {A new graphical calculus of proofs},
  editor    = {Echahed, Rachid},
  booktitle = {{\rm Proceedings 6th International Workshop on}
               Computing with Terms and Graphs,
               {\rm Saarbr\"ucken, Germany, 2nd April 2011}},
  series    = {Electronic Proceedings in Theoretical Computer Science},
  volume    = {48},
  publisher = {Open Publishing Association},
  pages     = {69-84},
  doi       = {10.4204/EPTCS.48.8},
}