@article{INTG_1966_1_a10,
     author = {A. P. Shirokov},
     title = {On a type of $G$-structures defined by algebras},
     journal = {Itogi Nauki i Tekhniki. Seriya Problemy Geometrii. Trudy Geometricheskogo Seminara},
     pages = {425--456},
     publisher = {mathdoc},
     volume = {1},
     year = {1966},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/INTG_1966_1_a10/}
}