@inproceedings{BUT192001,
  author="Miroslav {Beneš} and Tomáš {Hruška} and Elemír {Števko}",
  title="Rooted Graph with Types and Inheritance",
  booktitle="Proceedings of the ASU 94 Conference",
  year="1994",
  pages="194--204",
  publisher="unknown",
  address="Praha"
}