@InProceedings{	  dl03fsttcs,
  author	= "Volker Diekert and Markus Lohrey",
  title		= "Word equations over graph products",
  editor	= "P. K. Pandya and J. Radhakrishnan",
  booktitle	= "Proceedings of the 23rd Conference on Foundations of
		  Software Technology and Theoretical Computer Science
		  (FSTTCS 2003), Mumbai (India)",
  publisher	= "Springer-Verlag",
  series	= "Lecture Notes in Computer Science",
  volume	= "2914",
  pages		= "156--167",
  year		= "2003",
  doi		= "10.1007/978-3-540-24597-1_14"
}