00529nam a2200169Ia 4500100002100000110002800021245008700049260002400136300001000160490004600170490000500216690000600221952008800227964001700315921001000332999001700342  aSattinger, D. H.  aUniversite de Paris-Sud  aLes symetries des equations et leurs applications dans la mecanique et la physique  aOrsay, Francec1980  a100p.  aPublications Mathematiques D'Orsay; 80-08  a  a   00102ddc4070aISIbISId1999-07-28l0pG453r2019-02-11 00:00:00w2019-02-11yBK  abcdefg  a18906  c18906d18906