@article{IVM_1975_2_a11,
     author = {M. B. Vernikov},
     title = {Elements of tangency of a~surface in a~symplectic space. {The} general case},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {104--107},
     year = {1975},
     number = {2},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1975_2_a11/}
}