1. C1 + α local regularity of weak solutions of degenerate elliptic equations
2. Una maggiorazione a priori relativa alle ipersuperfici minimali non parametriche
3. A Symmetry Result Related to Some Overdetermined Boundary Value Problems
4. , and , Symmetry of positive solutions of nonlinear elliptic equations in Rn, pp. 369–402 in: Mathematical Analysis and Applications, ed., Advances in Mathematics Vol. 7A, Academic Press, New York, 1981.
5. Convergence problems for functionals and operators, pp. 131–188 in: Proc. Int. Meeting on Recent Methods in Nonlinear Analysis, Rome, 1978, , and , eds., Pitagora, Bologna, 1979.