@book{Kisielewicz:1998,
  editor    = "M. Kisielewicz",
  title     = "Discussiones Mathematicae : Algebra and Stochastic Methods, ISSN: 1234-3080",
  publisher = "Technical University Press",
  address   = "Zielona Góra",
  year      = "1998",
  volume    = "Vol. 18(no 1-2)",
}