@article{Jarczyk:2001,
  author  = "W. Jarczyk and G. Guzik and J. Matkowski",
  title   = "Continuous iteration semigroups and cocycles",
  journal = "Annales Mathematicae Silesianae",
  volume  = "nr 15",
  pages   = "91",
  year    = "2001",
  note    = "Uniwersytet Šl±ski, Katowice",
}