00693nam0-22002531i-450-990001233800403321000123380FED01000123380(Aleph)000123380FED0100012338020000920d1986----km-y0itay50------baengReversible systems.by SEVRYUK, M.B.Berlin [etc.]Springer-Verlag1986.Lecture Notes in Mathematics1211Sevryuk,Mikhail B.57101ITUNINARICAUNIMARCBK990001233800403321C-20-(12112798MA1MA1Reversible systems79915UNINAING01