1. The Riemannian obstacle problem;Alexander;Illinois J. Math.,1987
2. Onp;Canino;J. Differential Equations,1988
3. Existence of a closed geodesic onp;Canino;Ann. Inst. H. Poincaré Anal. Non Linéaire,1988
4. Local properties of geodesics onp;Canino;Ann. Mat. Pura Appl. (4),1991
5. Nonsmooth critical point theory and quasilinear elliptic equations;Canino,1995