@article{PORMA_1998__55_1_47966,
     author = {Petronilho, G.},
     title = {Regularity up to the boundary of solutions of the {Dirichlet} problem for certain degenerate elliptic equations.},
     journal = {Portugaliae mathematica},
     pages = {25--37},
     publisher = {mathdoc},
     volume = {55},
     number = {1},
     year = {1998},
     zbl = {0896.35025},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PORMA_1998__55_1_47966/}
}