1. J. Radlow and Y. M. Chen. Time decay in plane pulse diffraction by a smooth convex cylinder. Unpublished note.
2. Some topics in the theory of coupled ship motions;Kotik,1964
3. The decay of the free motion of a floating body;Ursell;J. Fluid Mech.,1964
4. Parabolic equations;Lax,1954
5. Partial Differential Equations of Parabolic Type;Friedman,1964