00511nam a2200145Ia 4500020001500000082001900015100004300034245012300077260003400200300002300234490005100257500000500308700002400313700002800337  a354053363X  a510.3bEn56.33  aEncyclopaedia of Mathematical Sciences  aPartial differential equations IVbmicrolocal analysis and hyperbolic equationscEd. by Yu. V. Egorov and M. A. Shubin  aBerlinbSpringer-Verlagc1993  a241p. Bibl. Index.  aEncyclopaedia of Mathematical Sciencesv V. 33  a  aEgorov, Yu V. ; ed.  aShubin, M. A. ; jt. ed.