%0 Journal Article %A A. D. Kovalev %A V. V. Nikitin %T Sets in the tool environment for developing program modules %J Numerical methods and programming %D 2000 %P 31-36 %V 1 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/VMP_2000_1_2_a4/ %G ru %F VMP_2000_1_2_a4