@article{Matkowski:2008,
  author  = "J. Matkowski",
  title   = "Generalized convex functions and a solution of a problem of Zs. Páles",
  journal = "Publicationes Mathematicae - Debrecen",
  volume  = "Vol. 73",
  number  = "no 3-4",
  pages   = "421--460",
  year    = "2008",
}