%0 Journal Article %A Mikola, Milan %T Coelevation of a graph %J Czechoslovak Mathematical Journal %D 1982 %P 648-654 %V 32 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1982.101843/ %R 10.21136/CMJ.1982.101843 %G en %F 10_21136_CMJ_1982_101843