TY  - JOUR
AU  - Ya. L. Shapiro
TI  - Reducible Riemannian spaces and two-sheeted structures on them
JO  - Doklady Akademii Nauk
PY  - 1972
SP  - 831
EP  - 833
VL  - 206
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1972_206_4_a14/
LA  - ru
ID  - DAN_1972_206_4_a14
ER  -