%0 Journal Article
%A S. V. Duzhin
%T Infinitesimal classification of systems of two PDE of first order
%J Zapiski Nauchnykh Seminarov POMI
%D 2001
%P 61-69
%V 279
%I mathdoc
%U http://geodesic.mathdoc.fr/item/ZNSL_2001_279_a3/
%G ru
%F ZNSL_2001_279_a3