@Inproceedings{EPTCS161.6,
  author    = {Ben-Amram, Amir M.},
  year      = {2014},
  title     = {The Hardness of Finding Linear Ranking Functions for Lasso Programs},
  editor    = {Peron, Adriano and Piazza, Carla},
  booktitle = {{\rm Proceedings Fifth International Symposium on}
                Games, Automata, Logics and Formal Verification,
               {\rm Verona, Italy, 10th - 12th September 2014}},
  series    = {Electronic Proceedings in Theoretical Computer Science},
  volume    = {161},
  publisher = {Open Publishing Association},
  pages     = {32-45},
  doi       = {10.4204/EPTCS.161.6},
}