@Inproceedings{EPTCS334.4,
  author    = {Campbell, Graham},
  year      = {2021},
  title     = {Parallel Hyperedge Replacement String Languages},
  editor    = {Bahr, Patrick},
  booktitle = {{\rm Proceedings 11th International Workshop on}
               Computing with Terms and Graphs,
               {\rm Online, 5th July 2020}},
  series    = {Electronic Proceedings in Theoretical Computer Science},
  volume    = {334},
  publisher = {Open Publishing Association},
  pages     = {46-61},
  doi       = {10.4204/EPTCS.334.4},
}