@article{oai:repository.dl.itc.u-tokyo.ac.jp:00040188,
 author = {Takiguchi, Takashi},
 issue = {3},
 journal = {Journal of mathematical sciences, the University of Tokyo},
 month = {},
 note = {application/pdf},
 pages = {545--563},
 title = {Non-uniqueness in an Overdetermined Cauchy Problem for the Wave Equation},
 volume = {9},
 year = {2002}
}