@inproceedings{YamaguchiS99,
  title = {An Approximation Algorithm for the Two-Layered Graph Drawing Problem},
  author = {Atsuko Yamaguchi and Akihiro Sugimoto},
  year = {1999},
  url = {http://link.springer.de/link/service/series/0558/bibs/1627/16270081.htm},
  tags = {graph-rewriting, rewriting},
  researchr = {https://researchr.org/publication/YamaguchiS99},
  cites = {0},
  citedby = {0},
  pages = {81-91},
  booktitle = {COCOON},
}