TY  - JOUR
AU  - M. A. Akivis
TI  - Closed $G$-structures on a~differentiable manifold
JO  - Itogi Nauki i Tekhniki. Seriya Problemy Geometrii. Trudy Geometricheskogo Seminara
PY  - 1975
SP  - 69
EP  - 79
VL  - 7
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/INTG_1975_7_a5/
LA  - ru
ID  - INTG_1975_7_a5
ER  -