%0 Journal Article %A È. S. Levin %A G. N. Rodionova %T The tautomerism of lactams in vapours investigated by means of infrared spectra %J Doklady Akademii Nauk %D 1965 %P 584-587 %V 164 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1965_164_3_a27/ %G ru %F DAN_1965_164_3_a27