@inproceedings{aky-mtlr-03 , author = "Tetsuo Asano and David Kirkpatrick and Chee Yap" , title = "Minimizing the trace length of a rod endpoint in the presence of polygonal obstacles is {NP-hard}" , booktitle = "Proc. 15th Canad. Conf. Comput. Geom." , site = "Halifax" , year = 2003 , pages = "10--13" }