%0 Journal Article %A N. V. Ardelyan %A M. N. Sablin %T Structural properties of grid operators in node implicit operator-difference schemes of two-dimensional gas dynamics on triangular grids and increasing the computational efficiency of object-oriented algorithms %J Numerical methods and programming %D 2012 %P 352-365 %V 13 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/VMP_2012_13_2_a7/ %G ru %F VMP_2012_13_2_a7