@article{oai:repository.dl.itc.u-tokyo.ac.jp:00039440,
 author = {Hasegawa, Kenji},
 issue = {1},
 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 = {19--41},
 title = {Propagation of micro-analyticities of solutions to some class of linear differential equations with non-involutive double characteristics},
 volume = {36},
 year = {1989}
}