@article{10_2140_agt_2008_8_381,
     author = {Ghiggini, Paolo},
     title = {On tight contact structures with negative maximal twisting number on small {Seifert} manifolds},
     journal = {Algebraic and Geometric Topology},
     pages = {381--396},
     year = {2008},
     volume = {8},
     number = {1},
     doi = {10.2140/agt.2008.8.381},
     url = {http://geodesic.mathdoc.fr/articles/10.2140/agt.2008.8.381/}
}