1. Existence and regularity for a minimum problem with free boundary;H W Alt;J. Reine Angew. Math,1981
2. Asymmetric jet flows;H W Alt;Comm. Pure Appl. Math,1982
3. Jet flows with gravity;H W Alt;J. Reine Angew. Math,1982
4. Axially symmetric jet flows;H W Alt;Arch. Rational Mech. Anal,1983
5. A free boundary problem for quasilinear elliptic equations;H W Alt;Ann. Scuola Norm. Sup. Pisa Cl. Sci,1984