TY  - JOUR
AU  - Yu. D. Burago
TI  - Three-dimensional open Riemannian space of nonnegative curvature
JO  - Zapiski Nauchnykh Seminarov POMI
PY  - 1976
SP  - 103
EP  - 113
VL  - 66
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/ZNSL_1976_66_a1/
LA  - ru
ID  - ZNSL_1976_66_a1
ER  -