TY - JOUR AU - Chin, Wei-Pang AU - Ntafos, S. TI - Shortest Watchman Routes in Simple Polygons. JO - Discrete & computational geometry PY - 1991 VL - 6 IS - 1 SP - 9 EP - 32 KW - polynomial-time algorithm; simple polygons; watchman-route problem; NP- hard UR - http://eudml.org/doc/131140 ER -