@incollection{Urvoy2000,
  author    = {{Tanguy Urvoy}},
  title     = {{Regularity of congruential graphs}},
  booktitle = {{Mathematical Foundations of Computer Science 2000 (Bratislava)}},
  publisher = {{Springer: Berlin}},
  year      = {{2000}},
  pages     = {{680--689}},
  note      = {{MR 2002d:68083}},
}