@article{MOMA_1990__109_2_178478,
     author = {Izu Vaisman},
     title = {Conormal {Bundles} with {Vanishing} {Maslov} {Form.}},
     journal = {Monatshefte f\"ur Mathematik},
     pages = {305--310},
     publisher = {mathdoc},
     volume = {109},
     number = {2},
     year = {1990},
     zbl = {0713.53019},
     url = {http://geodesic.mathdoc.fr/item/MOMA_1990__109_2_178478/}
}