@article{10_21136_CMJ_1980_101696,
     author = {Poljak, Svatopluk and R\"odl, Vojt\v{e}ch},
     title = {Orthogonal partitions and covering of graphs},
     journal = {Czechoslovak Mathematical Journal},
     pages = {475,476},
     publisher = {mathdoc},
     volume = {30},
     number = {3},
     year = {1980},
     doi = {10.21136/CMJ.1980.101696},
     mrnumber = {583626},
     zbl = {0456.05051},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1980.101696/}
}