@article{oai:tsukuba.repo.nii.ac.jp:00015939,
 author = {Suzuki, Humio},
 journal = {Tsukuba Journal of Mathematics},
 month = {Dec},
 pages = {127--134},
 title = {On the definition of the wave front set of a distribution},
 volume = {2},
 year = {1978}
}