01023nam0-22003611i-450-9900014333204033213-7643-5390-2000143332FED01000143332(Aleph)000143332FED01000143332--------d--------km-y0itay50------baeng<<On >>spectral theory of elliptic operatorsYuri Egorov, Vladimir KondratievBaselBirkhauserc1996vii, 328 p.25 cmOperator theory, advances and applications88Teoria spettraleEquazioni differenziali ellittiche515.7248Egorov,Yuri351110Kondratiev,VladimirITUNINARICAUNIMARCBK990001433320403321C-5-(8914788MA1MA135P0535D1534L0535J10Spectral theory of elliptic operators374755UNINA