@article{GDZPPN002107015,
title = {Classification of overtwisted contact structures on 3-manifolds.},
journal = {Inventiones mathematicae},
volume = {96},
year = {1989},
pages = {623-638},
zbl = {0684.57012},
url = {http://dml.mathdoc.fr/item/GDZPPN002107015}
}
Eliashberg, Y. Classification of overtwisted contact structures on 3-manifolds.. Inventiones mathematicae, Tome 96 (1989) pp. 623-638. http://gdmltest.u-ga.fr/item/GDZPPN002107015/