@article{oai:repository.dl.itc.u-tokyo.ac.jp:00039519, author = {Muthuramalingam, Pl.}, issue = {3}, journal = {Journal of the Faculty of Science, the University of Tokyo. Sect. 1 A, Mathematics = 東京大学理学部紀要. 第1類A, 数学}, month = {Dec}, note = {application/pdf}, pages = {443--455}, title = {Existence of the wave operators in long range scattering: the case of parabolic operators}, volume = {32}, year = {1985} }