@article{GT_2004_8_2_a8,
     author = {Gay, David T and Kirby, Robion},
     title = {Constructing symplectic forms on 4{\textendash}manifolds which vanish on circles},
     journal = {Geometry & topology},
     pages = {743--777},
     publisher = {mathdoc},
     volume = {8},
     number = {2},
     year = {2004},
     doi = {10.2140/gt.2004.8.743},
     url = {http://geodesic.mathdoc.fr/articles/10.2140/gt.2004.8.743/}
}