%0 Journal Article
%A Alexieva, Yana
%A Ivanov, Stefan
%T Riemannian manifolds in which certain curvature operator has constant eigenvalues along each helix
%J Archivum mathematicum
%D 1999
%P 129-140
%V 35
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/ARM_1999__35_2_a3/
%G en
%F ARM_1999__35_2_a3