1. Minimum-link watchman tours;Arkin;Inf. Process. Lett.,2003
2. Euclidean Geometry and Convexity;Benson,1966
3. Optimum Guard Covers and m-Watchmen Routes for Restricted Polygons;Carlsson,1991
4. Global path planning on board the Mars exploration rovers;Carsten,2007
5. Optimal exploration of terrains with obstacles;Czyzowicz,2010