Gautam K. Das Debapriyay Mukhopadhyay Subhas C. Nandy Improved Algorithm for a Widest 1-Corner Corridor. 83-92 2009 WALCOM http://dx.doi.org/10.1007/978-3-642-00202-1_8 conf/walcom/2009 db/conf/walcom/walcom2009.html#DasMN09