@article{IM_1987__89_143472,
     author = {D. McDuff},
     title = {Examples of symplectic structures.},
     journal = {Inventiones mathematicae},
     pages = {13--36},
     publisher = {mathdoc},
     volume = {89},
     year = {1987},
     zbl = {0625.53040},
     url = {http://geodesic.mathdoc.fr/item/IM_1987__89_143472/}
}