00355nam a2200121Ia 4500082001800000100004300018245004900061260003400110300001000144490005000154500000500204700002400209  a510.3bEn56.3  aEncyclopaedia of Mathematical Sciences  aDynamical systemsbPt.3cEd. by V. I. Arnold  aBerlinbSpringer-Verlagc1988  a291p.  aEncyclopaedia of Mathematical Sciencesv V. 3  a  aArnold, V. I. ; ed.