00271nam a2200109Ia 4500100001600000110002800016245003300044260002400077300000900101490004600110490000500156  aTartar, Luc  aUniversite de Paris-Sud  aTopics in nonlinear analysis  aOrsay, Francec1978  av.p.  aPublications Mathematiques D'Orsay; 78-13  a