00939nam0-22002891i-450-990001257370403321000125737FED01000125737(Aleph)000125737FED0100012573720000920d1986----km-y0itay50------baengInvariant manifolds, entropy and billiards, smooth maps with singularitiesby Katok and streclynBerlin [etc.]Springer-Verlag1986Lecture Notes in Mathematics1222with the collaboration of F. Ledrappier and F. PrzytyckiKatok,Anatole22857Katok,AnatoleStrelcyn,J.ITUNINARICAUNIMARCBK990001257370403321C-20-(12222539MA1MA1Invariant manifolds, entropy and billiards; smooth maps with singularities262330UNINAING01