BibTeX

@InProceedings{ThiWag09,
  author =       "Thierauf, Thomas and Wagner,Fabian",
  title =        "Reachability in ${K}_{3,3}$-free Graphs and  ${K}_5$-free Graphs is in Unambiguous Log-Space",
  booktitle =    "17th International Conference on Foundations of Computation Theory (FCT)",
  series =       "Lecture Notes in Computer Science 5699 ",
  publisher =    "Springer-Verlag",
  pages =        "323-334",
  year =         "2009"
}