00347nam a2200145Ia 4500020001800000082001900018100001700037245003700054250000800091260002900099300002300128490004000151500000500191700000500196  a9788132202578  a515.35bJ84.PD  aJost, Jurgen  aPartial differential equationsb  a2nd  aNew YorkbSpringerc2007  axiii, 356p. Index.  aGraduate texts in Mathematicsv 214  a  a