@article{10_1090_S0894_0347_1991_1115789_9,
     author = {Sj\"ostrand, Johannes and Zworski, Maciej},
     title = {Complex scaling and the distribution of scattering poles},
     journal = {Journal of the American Mathematical Society},
     pages = {729--769},
     year = {1991},
     volume = {04},
     number = {4},
     doi = {10.1090/S0894-0347-1991-1115789-9},
     url = {http://geodesic.mathdoc.fr/articles/10.1090/S0894-0347-1991-1115789-9/}
}