00892nam0-22003131i-450-99000109395040332120040526153546.00-19-853570-8000109395FED01000109395(Aleph)000109395FED0100010939520020001d--------km-y0itay50------baengSpectral Theory and Differential OperatorsDavid Eric Edmunds, W.D. EvansOxfordClarendon Press1987Oxford mathematical monographsFisica matematicaFisica teorica530Edmunds,David Eric52062Evans,W.D.ITUNINARICAUNIMARCBK99000109395040332120-131F16681FI1FI1Spectral Theory and Differential Operators335282UNINA