%0 Journal Article
%A I. V. Gribkov
%T Reduction in the order of recurrence of $3$-recurrent properly Riemannian spaces
%J Vestnik Moskovskogo universiteta. Matematika, mehanika
%D 1986
%P 104-106
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/VMUMM_1986_3_a22/
%G ru
%F VMUMM_1986_3_a22