@article{GT_2011_15_3_a2,
     author = {Usher, Michael},
     title = {Deformed {Hamiltonian} {Floer} theory, capacity estimates and {Calabi} quasimorphisms},
     journal = {Geometry & topology},
     pages = {1313--1417},
     publisher = {mathdoc},
     volume = {15},
     number = {3},
     year = {2011},
     doi = {10.2140/gt.2011.15.1313},
     url = {http://geodesic.mathdoc.fr/articles/10.2140/gt.2011.15.1313/}
}