@article{IVM_2002_1_a8,
     author = {Yu. I. Popov},
     title = {Almost contact structures of the manifold $P^0_n(\mathcal H)$},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {57--63},
     publisher = {mathdoc},
     number = {1},
     year = {2002},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_2002_1_a8/}
}