@article{MZM_1994_55_5_a13,
     author = {S. N. Shevchenko},
     title = {Description of the algebra of infinitesimal automorphisms of quadrics of codimension two and their classification},
     journal = {Matemati\v{c}eskie zametki},
     pages = {142--153},
     publisher = {mathdoc},
     volume = {55},
     number = {5},
     year = {1994},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1994_55_5_a13/}
}