@article{10_4153_CJM_2004_036_2,
     author = {Michel, Laurent},
     title = {Semi-Classical {Behavior} of the {Scattering} {Amplitude} for {Trapping} {Perturbations} at {Fixed} {Energy}},
     journal = {Canadian journal of mathematics},
     pages = {794--824},
     year = {2004},
     volume = {56},
     number = {4},
     doi = {10.4153/CJM-2004-036-2},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-2004-036-2/}
}