@article{CTGDC_1978__19_3_223_0, author = {Haahti, Heikki}, title = {Compact and small rank perturbations of conformally symplectic structures}, journal = {Cahiers de Topologie et G\'eom\'etrie Diff\'erentielle Cat\'egoriques}, volume = {19}, year = {1978}, pages = {223-268}, mrnumber = {546072}, zbl = {0405.53023}, language = {en}, url = {http://dml.mathdoc.fr/item/CTGDC_1978__19_3_223_0} }
Haahti, Heikki. Compact and small rank perturbations of conformally symplectic structures. Cahiers de Topologie et Géométrie Différentielle Catégoriques, Tome 19 (1978) pp. 223-268. http://gdmltest.u-ga.fr/item/CTGDC_1978__19_3_223_0/
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