@article{SEDP_1992-1993____A16_0,
     author = {Miyatake, S.},
     title = {Neumann operator for wave equation in a half space and microlocal orders of singularities along the boundary},
     journal = {S\'eminaire \'Equations aux d\'eriv\'ees partielles (Polytechnique) dit aussi "S\'eminaire Goulaouic-Schwartz"},
     note = {talk:16},
     pages = {1--6},
     publisher = {Ecole Polytechnique, Centre de Math\'ematiques},
     year = {1992-1993},
     mrnumber = {1240557},
     zbl = {0874.35063},
     language = {en},
     url = {http://www.numdam.org/item/SEDP_1992-1993____A16_0/}
}