%0 Journal Article %A G. Ya. Doubur %A G. Ya. Vanag %T Intramolecular reversible cyclization of amides of %J Doklady Akademii Nauk %D 1960 %P 1356-1359 %V 134 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1960_134_6_a22/ %G ru %F DAN_1960_134_6_a22