01057nam0-22003611i-450-99000133465040332190-277-1032-5000133465FED01000133465(Aleph)000133465FED0100013346520000920d1979----km-y0itay50------baengHyperbolic differential polynomials and their singular perturbationsJacques Chaillou.Dordrecht (NL)Reidelc1979.xv, 168 p24 cmMathematics and its applications3Translated from French by J. W. Nienhuys.Operatori differenziali parzialiPolinomiTeoria della perturbazione515.724Chaillou,Jacques12418ITUNINARICAUNIMARCBK990001334650403321C-55-(314008MA1MA135LXX47F05Hyperbolic differential polynomials117892UNINAING01