1. Variational problems with two phases and their free boundaries;Alt;Trans. Amer. Math. Soc.,1984
2. The behavior of the free boundary for the dam problem;Alt;Ann. Sc. Norm. Super. Pisa Cl. Sci. (5),1982
3. J. Andersson, H. Shahgholian, Stability properties of the free boundary near contact points with the fixed boundary for the obstacle problem, Calc. Var. Partial Differential Equations, in press
4. Sharp results for the regularity and stability of the free boundary in the obstacle problem;Blank;Indiana Univ. Math. J.,2001
5. Boundary regularity and compactness for overdetermined problems;Blank;Ann. Sc. Norm. Super. Pisa Cl. Sci.,2003