%0 Journal Article %A N. P. Shusherina %A M. Yu. Lourier %A R. Ya. Levina %T $\delta$-Lactones. Production of acylated butyrolactones from $\gamma$-bromine-$\delta$-ketone acids %J Doklady Akademii Nauk %D 1957 %P 1084-1087 %V 113 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1957_113_5_a34/ %G ru %F DAN_1957_113_5_a34