@TechReport{Kulas99:InfBericht254,
  author = 	 {M. Kula\v{s}},
  title = 	 {Port Annotations for {P}rolog},
  institution =  {FernUniversit{\"a}t Hagen},
  year = 	 {1999},
  type = 	 {Informatik Berichte},
  number = 	 {254},
  month = 	 {June}
}