%0 Journal Article %A V. G. Gorshkov %T Disturbance of global carbon cycle as inferred from $^{13}\mathrm{C}/^{12}\mathrm{C}$ change in natural %J Doklady Akademii Nauk %D 1987 %P 1332-1336 %V 295 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1987_295_6_a11/ %G ru %F DAN_1987_295_6_a11