1. The k-dense corridor problems;Chattopadhyay;Pattern Recognition Lett.,1990
2. Widest empty corridor with multiple links and right-angle turns;Cheng,1994
3. Finding the widest empty corridor through a set of points;Houle,1988
4. Widest-corridor problems;Janardan,1993
5. Proc. 5th Canadian Conf. on Computational Geometry;Janardan,1993