@InCollection{Matkowski:2012,
  author    = "J. Matkowski",
  title     = "Generalized weighted arithmetic means",
  pages     = "563--582",
  year      = "2012",
  booktitle = "Functional equations in mathematical analysis, ISBN: 9781461400547",
  editor    = "ed. T. M. Rassias, J. BrzdÍk",
  publisher = "Springer Science+Business Media",
  address   = "New York",
  series    = "Springer Optimization and Its Applications : Vol. 52",
}