@article{ZNSL_1999_265_a4,
     author = {N. A. Vavilov},
     title = {Subgroups of the split orthogonal {group.~II}},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {42--63},
     year = {1999},
     volume = {265},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1999_265_a4/}
}