@misc {IOPORT.70560963,
    author       = {Bhattacharya, Binay K. and Mukhopadhyay, Asish and Narasimhan, Giri},
    title        = {Optimal algorithms for two-guard walkability of simple polygons},
    howpublished = {WADS, 438-449 (2001).},
    year         = {2001},
    doi          = {10.1007/3-540-44634-6_40},
    identifier   = {70560963},
}