@article{MAN_1955__130_160460,
     author = {G.B. Rizza},
     title = {Dirichlet {Problem} for {n-Harmonic} {Functions} and {Related} {Geometrical} {Properties.}},
     journal = {Mathematische Annalen},
     pages = {202--218},
     publisher = {mathdoc},
     volume = {130},
     year = {1955},
     zbl = {0067.33004},
     url = {http://geodesic.mathdoc.fr/item/MAN_1955__130_160460/}
}