%0 Journal Article %A E. D. Nursultanov %A K. S. Saidahmetov %T On lower bound of the norm of integral convolution operator %J Fundamentalʹnaâ i prikladnaâ matematika %D 2002 %P 141-150 %V 8 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/FPM_2002_8_1_a11/ %G ru %F FPM_2002_8_1_a11