%0 Journal Article %A M. B. Abrosimov %A O. V. Modenova %T On minimal vertex $1$-extensions of path orientation %J Prikladnaâ diskretnaâ matematika %D 2017 %P 89-94 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/PDM_2017_4_a5/ %G ru %F PDM_2017_4_a5