%0 Journal Article
%A S. V. Solov'ev
%T Preservation of the equivalence of proofs under reduction of the formula depth
%J Zapiski Nauchnykh Seminarov POMI
%D 1979
%P 197-208
%V 88
%I mathdoc
%U http://geodesic.mathdoc.fr/item/ZNSL_1979_88_a15/
%G ru
%F ZNSL_1979_88_a15