00742nam0-22002531i-450-990001123230403321000112323FED01000112323(Aleph)000112323FED0100011232320000920d--------km-y0itay50------baengApproximation of elliptic boundary - value problemsde AubinNew York [etc.]Wiley-IntersciencePure and applied mathematics26Aubin,Jean-Pierre54013ITUNINARICAUNIMARCBK99000112323040332126-H-2612029MA1MA1Approximation of elliptic boundary-value problems118546UNINAING01