@article{GT_2012_16_2_a10,
     author = {Li, Tian-Jun and Wu, Weiwei},
     title = {Lagrangian spheres, symplectic surfaces and the symplectic mapping class group},
     journal = {Geometry & topology},
     pages = {1121--1169},
     publisher = {mathdoc},
     volume = {16},
     number = {2},
     year = {2012},
     doi = {10.2140/gt.2012.16.1121},
     url = {http://geodesic.mathdoc.fr/articles/10.2140/gt.2012.16.1121/}
}