@TechReport{	  die87tr,
  author	= "Volker Diekert",
  institution	= "Institut f{\"u}r Informatik der Technischen
		  Universit{\"a}t M{\"u}nchen",
  number	= "TUM-I8710",
  title		= "Two contributions to the theory of finite replacement
		  systems",
  type		= "Report",
  year		= "1987"
}