@article{Matkowski:1970,
  author  = "J. Matkowski",
  title   = "On the continuous dependence of solutions of a functional equation on given functions",
  journal = "Annales Polonici Mathematici",
  volume  = "Vol. 23",
  pages   = "37--40",
  year    = "1970",
  note    = "[Rok 1970/71]",
}