@article{IVM_1971_5_a2,
     author = {V. A. Gaukhman},
     title = {Almost complex structures on the manifold of tangent vectors},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {18--27},
     publisher = {mathdoc},
     number = {5},
     year = {1971},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1971_5_a2/}
}