%0 Journal Article %A S. S. Belyavsky %A S. G. Mulyarchick %A A. W. Popov %T Efficient computational schemes for the conjugate gradient method and their investigation for the problem of modeling semiconductor structures %J Differencialʹnye uravneniâ %D 1993 %P 1575-1584 %V 29 %N 9 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1993_29_9_a10/ %G ru %F DE_1993_29_9_a10