@article{Jarczyk:2003,
  author  = "J. Błasińska and D. Głazowska and J. Matkowski",
  title   = "An invariance of the geometric mean with respect to Stolarsky mean-type mappings",
  journal = "Results in Mathematics",
  volume  = "Vol. 43",
  pages   = "42--55",
  year    = "2003",
}