%0 Journal Article %A V. I. Vovk %A S. I. Maximov %T General representation of physical quantities in scheme-invariant perturbation theory and its optimization %J Teoretičeskaâ i matematičeskaâ fizika %D 1987 %P 226-233 %V 70 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/TMF_1987_70_2_a7/ %G ru %F TMF_1987_70_2_a7