1. Q-valued functions minimizing Dirichlet's integral and the regularity of area minimizing rectifiable currents up to codimension two, Princeton University Notes, 1983.
2. C1 + α local regularity of weak solutions of degenerate elliptic equations
3. Normal and Integral Currents
4. and , Partial regularity for minimizers of certain functionals having non quadratic growth, preprint, CMA, Canberra, 1985.
5. and , Remarks on the regularity of the minimizers of certain degenarate functionals, Preprint, Universita di Firenze.