1. Existence and regularity for a minimum problem with free boundary;Alt;J. Reine Angew. Math.,1981
2. Asymmetric jet flows;Alt;Commun. Pure Appl. Math.,1982
3. Jet flows with gravity;Alt;J. Reine Angew. Math.,1982
4. Axially symmetric jet flows;Alt;Arch. Ration. Mech. Anal.,1983
5. Variational problems with two phases and their free boundaries;Alt;Trans. Am. Math. Soc.,1984