@article{KunzStoffelMenon1997,
  author    = {Kunz, Wolfgang and Stoffel, Dominik and Menon, P.},
  title     = {Logic optimization and equivalence checking by implication analysis},
  year      = {1997},
  language  = {en}
}
@article{KunzMenon1994,
  author    = {Kunz, Wolfgang and Menon, P.},
  title     = {Multi-level logic optimization by implication analysis},
  isbn      = {0-89791-690-5},
  year      = {1994},
  language  = {en}
}