@article{DAN_1974_218_3_a10,
     author = {O. S. Ivanitskaya},
     title = {Invariants of a local {Lorentz} subgroup in the {Einstein} theory of gravitation},
     journal = {Doklady Akademii Nauk},
     pages = {540--542},
     publisher = {mathdoc},
     volume = {218},
     number = {3},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1974_218_3_a10/}
}