Boaz Ben-Moshe Binay K. Bhattacharya Qiaosheng Shi Farthest Neighbor Voronoi Diagram in the Presence of Rectangular Obstacles. 243-246 2005 conf/cccg/2005 CCCG http://www.cccg.ca/proceedings/2005/76.pdf db/conf/cccg/cccg2005.html#Ben-MosheBS05a