@article{oai:repository.dl.itc.u-tokyo.ac.jp:00039740, author = {Taira, Kazuaki}, issue = {2}, 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 = {Aug}, note = {Communicated by D. Fujiwara}, pages = {343--367}, title = {On some non-coercive boundary value problems for the Laplacian}, volume = {23}, year = {1976} }