How to Guard a Graph?.

Fedor V. Fomin Petr A. Golovach Alexander Hall Matús Mihalák Elias Vicari Peter Widmayer How to Guard a Graph?. 318-329 2008 ISAAC http://dx.doi.org/10.1007/978-3-540-92182-0_30 conf/isaac/2008 db/conf/isaac/isaac2008.html#FominGHMVW08