@article{MZ_1988__199_1_173946,
     author = {Arne Jensen and Hitoshi Kitada},
     title = {Fundamental {Solutions} and {Eigenfunction} {Expansions} for {Schr\"odinger} {Operators.} {II.} {Eigenfunction} {Expansions.}},
     journal = {Mathematische Zeitschrift},
     pages = {1--14},
     publisher = {mathdoc},
     volume = {199},
     number = {1},
     year = {1988},
     zbl = {0641.35049},
     url = {http://geodesic.mathdoc.fr/item/MZ_1988__199_1_173946/}
}