@article{GDZPPN002110008, title = {CR-structures on three dimensional circle bundles.}, journal = {Inventiones mathematicae}, volume = {110}, year = {1992}, pages = {351-404}, zbl = {0786.32013}, url = {http://dml.mathdoc.fr/item/GDZPPN002110008} }
Epstein, Charles L. CR-structures on three dimensional circle bundles.. Inventiones mathematicae, Tome 110 (1992) pp. 351-404. http://gdmltest.u-ga.fr/item/GDZPPN002110008/