%0 Journal Article %A B. A. Arbuzov %A O. A. Erastov %A A. B. Remizov %T Spectroscopic investigation of the tautomerism of 4-carbomethoxy-3-ketothiophane, 2-carbomethoxy-3- ketothiophane, %J Doklady Akademii Nauk %D 1965 %P 82-85 %V 162 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1965_162_1_a18/ %G ru %F DAN_1965_162_1_a18