@article{Drgas-Burchardt:2013,
  author  = "E. Drgas-Burchardt and Z. ¦witalski",
  title   = "A number of stable matchings in models of the Gale-Shapley type",
  journal = "Discrete Applied Mathematics",
  volume  = "Vol. 161",
  number  = "no. 18",
  pages   = "2932--2936",
  year    = "2013",
}