@article{INTG_1982_13_a1,
     author = {N. M. Ostianu and R. F. Dombrovskii and N. D. Polyakov},
     title = {Submanifolds in differentiable manifolds provided with differential geometric structures. {II.~Submanifolds} of codimension~2 in contact and almost contact manifolds},
     journal = {Itogi Nauki i Tekhniki. Seriya Problemy Geometrii. Trudy Geometricheskogo Seminara},
     pages = {27--76},
     publisher = {mathdoc},
     volume = {13},
     year = {1982},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/INTG_1982_13_a1/}
}