01023nam0-22003491i-450-99000086658040332120150624091133.03-540-52002-3000086658FED01000086658(Aleph)000086658FED0100008665820020821d1992----km-y0itay50------baengDEy-------001yyPartial differential equations 1.foundations of the classical theoryeds. Yu. V. Egorov, M.A. ShubinBerlinSpringer-Verlag1992259 p.24 cmEncyclopaedia of mathematical sciences30515.353Egorov,Iurii VladimirovicShubin,Mikhail AleksandrovichITUNINARICAUNIMARCBK99000086658040332102 33 E 757448FINBN02 88A8880FINBNFINBN35-XXPartial differential equations 183392UNINA