@article{Matkowski:1970,
  author  = "J. Matkowski",
  title   = "On the continuous dependence of local analytic solutions of the functional equation in the non-uniqueness case",
  journal = "Annales Polonici Mathematici",
  volume  = "Vol. 24",
  pages   = "319--326",
  year    = "1970",
  note    = "[Rok 1970/71]",
}