%0 Journal Article %A L. L. Tsinman %T On the role of the principle of induction in a formal arithmetic system %J Sbornik. Mathematics %D 1968 %P 65-95 %V 6 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_1968_6_1_a4/ %G en %F SM_1968_6_1_a4