@article{RM_1988_43_3_a18,
     author = {S. L. Tabachnikov},
     title = {An invariant of a~submanifold transversal to a~distribution},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {225--226},
     publisher = {mathdoc},
     volume = {43},
     number = {3},
     year = {1988},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1988_43_3_a18/}
}