%0 Journal Article
%A Nguen Khak Tkhan'
%T Representation of natural numbers by a cubic form in seven variables
%J Vestnik Moskovskogo universiteta. Matematika, mehanika
%D 1993
%P 3-7
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/VMUMM_1993_2_a0/
%G ru
%F VMUMM_1993_2_a0