01031nam0-22003491i-450 99000086661040332120200828092316.03-540-53363-X000086661FED01000086661(Aleph)000086661FED0100008666120020821d1993----km-y0itay50------baengDEy-------001yyPartial differential equations 4.microlocal analysis and hyperbolic equationsYu.V. Egorov, M.A. Shubin [eds]BerlinSpringer-Verlag1993241 p.24 cmEncyclopaedia of mathematical sciences33515.353Egorov,Iurii VladimirovicShubin,Mikhail AleksandrovichITUNINARICAUNIMARCBK99000086661040332102 33 E 787451FINBN124-A-3811741MA1MA1FINBNPartial differential equations 483395UNINA