%0 Journal Article %A Sergiy Kozerenko %T On disjoint union of $\mathrm{M}$-graphs %J Algebra and discrete mathematics %D 2017 %P 262-273 %V 24 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/ADM_2017_24_2_a6/ %G en %F ADM_2017_24_2_a6