@article{DCG_1991__6_4_131140,
     author = {Wei-Pang Chin and S. Ntafos},
     title = {Shortest {Watchman} {Routes} in {Simple} {Polygons.}},
     journal = {Discrete & computational geometry},
     pages = {9--32},
     publisher = {mathdoc},
     volume = {6},
     number = {4},
     year = {1991},
     zbl = {0715.68037},
     url = {http://geodesic.mathdoc.fr/item/DCG_1991__6_4_131140/}
}