%0 Journal Article %A Yu. L. Shmul'yan %T On division in the class of $J$-stretching operators %J Sbornik. Mathematics %D 1967 %P 471-479 %V 3 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_1967_3_4_a2/ %G en %F SM_1967_3_4_a2