%0 Journal Article %A B. A. Arbuzov %A O. A. Erastov %A A. B. Remizov %T The spectroscopic study of the tautomerism of the methyl and ethyl esters of 4-ketotetrahydrothiopyrone-3-carboxylic acid %J Doklady Akademii Nauk %D 1965 %P 103-106 %V 161 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1965_161_1_a27/ %G ru %F DAN_1965_161_1_a27