%0 Journal Article %A A. V. Skvortsov %T An algorithm for constructing the union, intersection and difference of %J Numerical methods and programming %D 2002 %P 116-123 %V 3 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/VMP_2002_3_1_a7/ %G ru %F VMP_2002_3_1_a7