@article{GDZPPN002490064,
title = {Positive Solutions of Schr\"odinger Equations in Two-Dimensional Exterior Domains.},
journal = {Monatshefte f\"ur Mathematik},
volume = {123},
year = {1997},
pages = {121-126},
zbl = {0866.35031},
url = {http://dml.mathdoc.fr/item/GDZPPN002490064}
}
Constantin, Adrian. Positive Solutions of Schrödinger Equations in Two-Dimensional Exterior Domains.. Monatshefte für Mathematik, Tome 123 (1997) pp. 121-126. http://gdmltest.u-ga.fr/item/GDZPPN002490064/