@article{JEMS_2017_19_8_a4,
     author = {Vladimir Georgescu and Christian G\'erard and Dietrich H\"afner},
     title = {Asymptotic completeness for superradiant {Klein{\textendash}Gordon} equations and applications to the {De} {Sitter{\textendash}Kerr} metric},
     journal = {Journal of the European Mathematical Society},
     pages = {2371--2444},
     publisher = {mathdoc},
     volume = {19},
     number = {8},
     year = {2017},
     doi = {10.4171/jems/720},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/jems/720/}
}