Soji Yamakawa Kenji Shimada Polygon Crawling: Feature-Edge Extraction from a General Polygonal Surface for Mesh Generation. 257-274 2005 IMR http://dx.doi.org/10.1007/3-540-29090-7_15 conf/imr/2005 db/conf/imr/imr2005.html#YamakawaS05