@article{INTG_1974_5_a11,
     author = {A. P. Shirokov},
     title = {A remark on structures in tangent bundles},
     journal = {Itogi Nauki i Tekhniki. Seriya Problemy Geometrii. Trudy Geometricheskogo Seminara},
     pages = {311--318},
     publisher = {mathdoc},
     volume = {5},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/INTG_1974_5_a11/}
}