00364nam a2200121Ia 4500082001800000100003400018245005000052260003800102300002600140490004300166500000500209700002800214  a530.1bK43.PM  aKevorkian, J. and Cole, J. D.  aPerturbation methods in applied mathematicsb  aNew JerseybSpringer-Verlagc1981  ax, 558p. Index, Bibl.  aApplied Mathematical Sciences v v. 34  a  aCole, J. D. ; jt. auth.