@inbook{16611,
  author       = {{Golubitsky, Martin and Marsden, Jerrold and Stewart, Ian and Dellnitz, Michael}},
  booktitle    = {{Normal Forms and Homoclinic Chaos}},
  isbn         = {{9780821803264}},
  title        = {{{The constrained Liapunov-Schmidt procedure and periodic orbits}}},
  doi          = {{10.1090/fic/004/05}},
  year         = {{1995}},
}