%0 Journal Article %A A. V. Gavrikov %T T-irreducible extension of unions of some types orgraphs %J Prikladnaâ diskretnaâ matematika %D 2013 %P 47-55 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/PDM_2013_4_a4/ %G ru %F PDM_2013_4_a4