@article{oai:repository.dl.itc.u-tokyo.ac.jp:00041055, author = {Kuroda, Shige Toshi}, journal = {Scientific papers of the College of General Education, University of Tokyo}, month = {}, note = {application/pdf}, pages = {87--91}, title = {On the Essential Spectrum of Schrodinger Operators with Vector Potentials}, volume = {23}, year = {1973} }