1. A. Aftalion, F. Pacella, Morse index and uniqueness for positive solutions of radial p-Laplace equations, Trans. Amer. Math. Soc., in press.
2. A note on radiality of solutions of p-Laplacian equations;Badiale;Appl. Anal,1994
3. On the method of moving planes and the sliding methods;Berestycki;Bol. Soc. Brasil. Mat,1991
4. F. Brock, Continuous Rearrangement and symmetry of solutions of elliptic problems, Habilitation Thesis, Cologne, 1997.
5. F. Brock, Radial symmetry for nonnegative solutions of semilinear elliptic problems involving the p-Laplacian, Calculus of variations, applications and computations, Proceedings of a conference in Pont-á-Mousson, 1997.