@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/