@article{oai:repository.dl.itc.u-tokyo.ac.jp:00039448,
 author = {Yamamoto, Masahiro},
 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 = {},
 note = {application/pdf},
 pages = {519--546},
 title = {Inverse spectral problem for systems of ordinary differential equations of first order, I},
 volume = {35},
 year = {1988}
}