@article{oai:tsukuba.repo.nii.ac.jp:00016100, author = {Nagasawa, Takeyuki and Tachikawa, Atsushi}, issue = {1}, journal = {Tsukuba Journal of Mathematics}, month = {Jun}, pages = {51--64}, title = {Existence and asymptotic behavior of weak solutious to semilinear hyperbolic systems with damping terms}, volume = {20}, year = {1996} }