Ju. Kim, ON A WAVE-EQUATION WITH A BOUNDARY-CONDITION ASSOCIATED WITH CAPILLARY WAVES, SIAM journal on mathematical analysis (Print), 30(1), 1999, pp. 53-71
This paper discusses an initial-boundary value problem for a wave equa
tion with a nonstandard boundary condition associated with linear capi
llary waves on the surface of a compressible liquid. We prove the well
-posedness of this problem. Our main technical device is the Fourier t
ransform.