@article{VMUMM_1988_3_a13,
     author = {I. V. Gribkov},
     title = {On sufficient conditions for maximality of the group of holonomy for {Riemannian} manifolds},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {50--52},
     publisher = {mathdoc},
     number = {3},
     year = {1988},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1988_3_a13/}
}