@inproceedings{Pratt91,
  title = {Modeling Concurrency with Geometry},
  author = {Vaughan R. Pratt},
  year = {1991},
  tags = {meta-model, modeling, Meta-Environment},
  researchr = {https://researchr.org/publication/Pratt91},
  cites = {0},
  citedby = {0},
  pages = {311-322},
  booktitle = {POPL},
}