@inproceedings{cccg-06
, title =       "Two-Guard Art Gallery Problem"
, author =      "Junqiang Zhou and Simeon Ntafos"
, booktitle =   "Proceedings of the 18th Canadian Conference on Computational Geometry (CCCG'06)"
, site =        "Kingston"
, year =        2006
, pages =       "51--54"
}