TY  - JOUR
AU  - I. V. Gribkov
TI  - Reduction in the order of recurrence of $3$-recurrent properly Riemannian spaces
JO  - Vestnik Moskovskogo universiteta. Matematika, mehanika
PY  - 1986
SP  - 104
EP  - 106
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/VMUMM_1986_3_a22/
LA  - ru
ID  - VMUMM_1986_3_a22
ER  -