Andreas Emil Feldmann Shantanu Das 0001 Peter Widmayer Restricted Cuts for Bisections in Solid Grids: A Proof via Polygons. 143-154 2011 WG http://dx.doi.org/10.1007/978-3-642-25870-1_14 conf/wg/2011 db/conf/wg/wg2011.html#FeldmannDW11