@article{BjornerW99,
  title = {Complexes of Directed Graphs},
  author = {Anders Björner and Volkmar Welker},
  year = {1999},
  url = {http://epubs.siam.org/sam-bin/dbq/article/33872},
  tags = {graph-rewriting, rewriting},
  researchr = {https://researchr.org/publication/BjornerW99},
  cites = {0},
  citedby = {0},
  journal = {SIAM J. Discrete Math.},
  volume = {12},
  number = {4},
  pages = {413-424},
}