title = {Shortest paths in two intersecting pencils of lines},
author = {David Hart},
booktitle = {Proc. 15th Canad. Conf. Computational Geometry (CCCG 2003)},
publisher = {Dalhousie Univ., Faculty of Computer Science},
address = {6050 University Ave., Halifax, NS B3H 1W5, Canada},
pages = {166--169},
month = {Aug},
year = {2003},
url = {http://torch.cs.dal.ca/~cccg/papers/48.pdf}}

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