@InProceedings{	  dgp96,
  author	= "Volker Diekert and Paul Gastin and Antoine Petit",
  title		= "Recent developments in trace theory",
  booktitle	= "Developments in Language Theory II",
  editor	= "J. Dassow and G. Rozenberg and A. Salomaa",
  publisher	= "World Scientific",
  year		= "1996",
  pages		= "373--385",
  note		= "Proceedings of the 2nd Conference on Developments in
		  Language Theory (DLT'95), Magdeburg 1995 (Germany)"
}