00331nam a2200121Ia 4500082002100000100002400021245007900045260003700124300002100161490001700182500000500199700000500204  a515.35bSa262.PD  aSauvigny, Friedrich  aPartial differential equations 1bfoundations and integral representations  aNew DelhibSpringer-Verlagc2012  axiv, 437p. Index  aUniversitext  a  a