%0 Journal Article %A Yu. V. Zyuzin %A V. Ya. Lin %T Unramified algebraic extensions of commutative Banach algebras %J Sbornik. Mathematics %D 1973 %P 419-437 %V 20 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_1973_20_3_a6/ %G en %F SM_1973_20_3_a6