%0 Journal Article %A V. I. Usacheva %A A. V. Volkova %T Software development to assess the economic efficiency of operation and the consequences of upgrading the equipment of electric grid companies %J Matematičeskaâ fizika i kompʹûternoe modelirovanie %D 2017 %P 63-75 %V 20 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/VVGUM_2017_20_5_a6/ %G ru %F VVGUM_2017_20_5_a6