@inproceedings{fhnr-opcg-03 , author = "Henning Fernau and Torben Hagerup and Naomi Nishimura and Prabhakar Ragde and Klaus Reinhardt" , title = "On the parameterized complexity of the generalized rush hour puzzle" , booktitle = "Proc. 15th Canad. Conf. Comput. Geom." , site = "Halifax" , year = 2003 , pages = "6--9" }