@article{oai:repository.dl.itc.u-tokyo.ac.jp:00040343,
 author = {Yamane, Hideshi},
 issue = {3},
 journal = {Journal of mathematical sciences, the University of Tokyo},
 month = {},
 note = {application/pdf},
 pages = {671--749},
 title = {Branching of singularities for some second or third order microhyperbolic operators},
 volume = {2},
 year = {1995}
}