@article{MZM_2013_93_6_a2,
     author = {A. S. Galaev},
     title = {Note on the {Holonomy} {Groups} of {Pseudo-Riemannian} {Manifolds}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {821--827},
     publisher = {mathdoc},
     volume = {93},
     number = {6},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2013_93_6_a2/}
}