%0 Journal Article
%A V. V. Vishnevskii
%A A. P. Norden
%T On complex representation of the invariants of a~four-dimensional Riemannian space
%J Izvestiâ vysših učebnyh zavedenij. Matematika
%D 1959
%P 176-182
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IVM_1959_2_a16/
%G ru
%F IVM_1959_2_a16