%0 Journal Article %A E. Yu. Ivanov %A V. V. Boldyrev %T On the mechanism of polymorphous transition in ammonium perchlorate crystals %J Doklady Akademii Nauk %D 1979 %P 862-865 %V 248 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1979_248_4_a18/ %G ru %F DAN_1979_248_4_a18