Guarding in a simple polygon. - Bor-Kuan Lu; Fang-Rong Hsu; Chuan Yi Tang (Inf. Process. Lett., 2000)

Finding the shortest boundary guard of a simple polygon. - Bor-Kuan Lu; Fang-Rong Hsu; Chuan Yi Tang (Theor. Comput. Sci., 2001)