00570nam a2200181Ia 4500082002000000100001800020245007600038260004800114300002100162490004300183500000500226690000600231700000500237952010200242964001700344921001000361999001700371  a530.3bSe516.MM  aSewell, M. J.  aMaximum and minimum principles; a unified approach, with applicationsb  aCambridgebCambridge University Pressc1987  axvi, 468p. Index  aCambridge texts in Applied Mathematics  a  a   a  00104070aISIbISId1998-10-12l0o530.3 Se516.MMpDP21056r2019-02-14 00:00:00w2019-02-14yBK  abcdefg  a16981  c16981d16981