@article{oai:repository.dl.itc.u-tokyo.ac.jp:00040267, author = {Nakamura, Shu}, issue = {4}, journal = {Journal of mathematical sciences, the University of Tokyo}, month = {}, note = {application/pdf}, pages = {693--712}, title = {Agmon-Type Exponential Decay Estimates for Pseudodifferential Operators}, volume = {5}, year = {1998} }