%0 Journal Article %A T. I. Abramovich %A I. P. Gragerov %A V. V. Perekalin %T Isotopic exchange of hydrogen and the ability of methyl derivatives of nitrogen-containing heterocycles to enter into %J Doklady Akademii Nauk %D 1958 %P 295-298 %V 121 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1958_121_2_DAN_1958_121_2_a19/ %G ru %F DAN_1958_121_2_DAN_1958_121_2_a19