%0 Journal Article %A D. V. Alekseev %A P. V. Egorov %T The persistent regime of multiplication of cracks and the concentration criterion of fracture %J Doklady Akademii Nauk %D 1993 %P 769-770 %V 333 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1993_333_6_a12/ %G ru %F DAN_1993_333_6_a12