@article{Matkowski:2012,
  author  = "J. Matkowski",
  title   = "Invariance of Bajraktarevič mean with respect to quasi arithmetic means",
  journal = "Publicationes Mathematicae - Debrecen",
  volume  = "Vol. 80",
  number  = "no 3-4",
  pages   = "441--455",
  year    = "2012",
}