TY  - JOUR
AU  - Alexieva, Yana
AU  - Ivanov, Stefan
TI  - Riemannian manifolds in which certain curvature operator has constant eigenvalues along each helix
JO  - Archivum mathematicum
PY  - 1999
SP  - 129
EP  - 140
VL  - 35
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/ARM_1999__35_2_a3/
LA  - en
ID  - ARM_1999__35_2_a3
ER  -