@article{GDZPPN00243492X,
title = {Fundamental Solutions and Eigenfunction Expansions for Schr\"odinger Operators . I. Fundamental Solutions.},
journal = {Mathematische Zeitschrift},
volume = {199},
year = {1988},
pages = {181-190},
zbl = {0627.35073},
url = {http://dml.mathdoc.fr/item/GDZPPN00243492X}
}
Kitada, Hitoshi. Fundamental Solutions and Eigenfunction Expansions for Schrödinger Operators . I. Fundamental Solutions.. Mathematische Zeitschrift, Tome 199 (1988) pp. 181-190. http://gdmltest.u-ga.fr/item/GDZPPN00243492X/