1. T. Cazenave, A. Haraux, An Introduction to Semilinear Evolution Equations, Lecture Series in Mathematics and its Applications, Vol. 13, Oxford Science Publications, Oxford, 1998.
2. On the diffusion phenomenon of quasilinear hyperbolic waves;Han;Bull. Sci. Math.,2000
3. Mixed problem for hyperbolic equations of second order;Ikawa;J. Math. Soc. Japan,1968
4. L2-behaviour of solutions to the linear heat and wave equations in exterior domains;Ikehata;Sci. Math. Japon,2002
5. On the decay property of solutions to the Cauchy problem of the semilinear wave equation with a dissipative term;Kawashima;J. Math. Soc. Japan,1995