%0 Journal Article %A G. V. Krivovichev %T Krivovichev G.V %J Numerical methods and programming %D 2012 %P 332-340 %V 13 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/VMP_2012_13_2_a4/ %G ru %F VMP_2012_13_2_a4