@article{Matkowski:2003,
  author  = "J. Matkowski",
  title   = "On subadditive functions and \psi-additive mappings",
  journal = "Central European Journal of Mathematics",
  volume  = "Vol. 1",
  number  = "no 4",
  pages   = "435--440",
  year    = "2003",
  note    = "http://www.cesj.com/mathematics.html, [dostÍp: 23-10-2003]",
}