@article{GDZPPN002487187, title = {Conormal Bundles with Vanishing Maslov Form.}, journal = {Monatshefte f\"ur Mathematik}, volume = {109}, year = {1990}, pages = {305-310}, zbl = {0713.53019}, url = {http://dml.mathdoc.fr/item/GDZPPN002487187} }
Vaisman, Izu. Conormal Bundles with Vanishing Maslov Form.. Monatshefte für Mathematik, Tome 109 (1990) pp. 305-310. http://gdmltest.u-ga.fr/item/GDZPPN002487187/