1. Doppel, K.: On the weakly formulated floating body problem. Technical Report No.87-4, Dept. of Math., Univ. of Delaware, Newark, Delaware, June 1987.
2. Doppel, K./G. C. Hsiao: On weak solutions of the floating body problem. Technical Report No.87-5, Dept. of Math., Univ. of Delaware, Newark, Delaware, July 1987.
3. On a weakly formulated exterior problem from linear hydrodynamics
4. Doppel, K./B. Schomburg: Regularity of solutions of the weak floating beam problem. To appear in: Zeitschrift für Analysis und ihre Anwendungen.