00341nam a2200121Ia 4500082002000000100001700020245006600037260002900103300001500132490006200147500000500209700000500214  a515.35bP346.IP  aPayne, L. E.  aImproperly posed problems in partial differential equationsb  aPennsylvaniabSIAMc1975  a76p. Bibl.  aRegional conference series in Applied Mathematicsv v. 22  a  a