@article{Kelmans92,
  title = {Spanning trees of extended graphs},
  author = {Alexander K. Kelmans},
  year = {1992},
  tags = {graph-rewriting, rewriting},
  researchr = {https://researchr.org/publication/Kelmans92},
  cites = {0},
  citedby = {0},
  journal = {Combinatorica},
  volume = {12},
  number = {1},
  pages = {45-51},
}