@article{10_4153_CMB_2003_028_7,
     author = {Rochon, Fr\'ed\'eric},
     title = {Rigidity of {Hamiltonian} {Actions}},
     journal = {Canadian mathematical bulletin},
     pages = {277--290},
     year = {2003},
     volume = {46},
     number = {2},
     doi = {10.4153/CMB-2003-028-7},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-2003-028-7/}
}