%0 Journal Article %A A. A. Razborov %T Unprovability of lower bounds on circuit size in certain fragments of bounded arithmetic %J Izvestiya. Mathematics %D 1995 %P 205-227 %V 59 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM2_1995_59_1_a8/ %G en %F IM2_1995_59_1_a8