Hua Guo Anil Maheshwari Jörg-Rüdiger Sack Shortest Path Queries in Polygonal Domains. 200-211 2008 AAIM http://dx.doi.org/10.1007/978-3-540-68880-8_20 conf/aaim/2008 db/conf/aaim/aaim2008.html#GuoMS08