On a quasilinear elliptic equation and a Riemannian metric invariant under Möbius transformations. Heinz Leutwiler, Catherine Bandle (1991) Aequationes mathematicae
On a quasilinear elliptic equation and a Riemannian metric invariant under Möbius transformations. (Summary). C. Bandle, H. Leutwiler (1991) Aequationes mathematicae