@article{MAN_1984__269_163941,
     author = {R. Picard and S. Seidler},
     title = {A {Remark} on {Two} {Hilbert} {Space} {Scattering} {Theory.}},
     journal = {Mathematische Annalen},
     pages = {411--416},
     year = {1984},
     volume = {269},
     zbl = {0537.47007},
     url = {http://geodesic.mathdoc.fr/item/MAN_1984__269_163941/}
}