@article{MZ_1993__212_4_174491,
     author = {G\"unter Stolz and Thomas Poerschke},
     title = {On eigenfunction expansions and scattering theory.},
     journal = {Mathematische Zeitschrift},
     pages = {337--358},
     publisher = {mathdoc},
     volume = {212},
     number = {4},
     year = {1993},
     zbl = {0793.47007},
     url = {http://geodesic.mathdoc.fr/item/MZ_1993__212_4_174491/}
}