00378nam a2200121Ia 4500082001800000100004300018245007200061260003400133300001000167490005000177500000500227700002400232  a510.3bEn56.6  aEncyclopaedia of Mathematical Sciences  aDynamical systemsbPt.6 - Singularity theory 1cEd. by V. I. Arnold  aBerlinbSpringer-Verlagc1993  a245p.  aEncyclopaedia of Mathematical Sciencesv V. 6  a  aArnold, V. I. ; ed.