@article{PORMA_1995__52_4_47417,
     author = {Constantin, Adrian},
     title = {Positive solutions of elliptic equations in two-dimensional exterior domains.},
     journal = {Portugaliae mathematica},
     pages = {471--474},
     publisher = {mathdoc},
     volume = {52},
     number = {4},
     year = {1995},
     zbl = {0839.35037},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PORMA_1995__52_4_47417/}
}