%0 Journal Article %A S. V. Porshnev %T Application of the Mathcad package to studying iterative methods for solving boundary value problems for two-dimensional elliptic differential equations %J Numerical methods and programming %D 2001 %P 7-14 %V 2 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/VMP_2001_2_3_a1/ %G ru %F VMP_2001_2_3_a1