@article{MOMA_1997__123_1_178764,
     author = {Adrian Constantin},
     title = {Positive {Solutions} of {Schr\"odinger} {Equations} in {Two-Dimensional} {Exterior} {Domains.}},
     journal = {Monatshefte f\"ur Mathematik},
     pages = {121--126},
     publisher = {mathdoc},
     volume = {123},
     number = {1},
     year = {1997},
     zbl = {0866.35031},
     url = {http://geodesic.mathdoc.fr/item/MOMA_1997__123_1_178764/}
}