@InProceedings{	  die90stacs,
  author	= "Volker Diekert",
  address	= "Heidelberg",
  booktitle	= "Proc. 7th Annual Symposium on Theoretical Aspects of
		  Computer Science (STACS'90), Rouen (France), 1990",
  editor	= "C. Choffrut and others",
  volume	= "415",
  pages		= "138--151",
  publisher	= "Springer-Verlag",
  series	= "Lecture Notes in Computer Science",
  title		= "Combinatorial rewriting on traces",
  year		= "1990",
  doi		= "10.1007/3-540-52282-4_38"
}