@article{oai:repository.dl.itc.u-tokyo.ac.jp:00040996, author = {Yajima, Kenji}, journal = {Scientific papers of the College of Arts and Sciences, the University of Tokyo}, month = {}, note = {application/pdf}, pages = {27--36}, title = {Exponential Decay of Quasi-stationary States of Time-periodic Schrodinger Equation with Short Range Potentials}, volume = {40}, year = {1990} }