@article{IM_1986__83_143325,
     author = {Patricio Aviles},
     title = {Conformal complete metrics with prescribed non-negative {Gaussian} curvature in {R2.}},
     journal = {Inventiones mathematicae},
     pages = {519--544},
     publisher = {mathdoc},
     volume = {83},
     year = {1986},
     zbl = {0592.53034},
     url = {http://geodesic.mathdoc.fr/item/IM_1986__83_143325/}
}