@article{ZNSL_2017_464_a2,
     author = {K. Kokhas and A. Latyshev},
     title = {For which graphs sages can guess a~color of at least one hat},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {48--76},
     publisher = {mathdoc},
     volume = {464},
     year = {2017},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2017_464_a2/}
}