%0 Journal Article %A S. D. Kirik %A S. A. Kovyazin %A A. M. Fedotov %T Some formalized criteria of similarity of X-ray powder patterns %J Doklady Akademii Nauk %D 1988 %P 614-617 %V 300 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1988_300_3_a20/ %G ru %F DAN_1988_300_3_a20