00656cam 22002171 450 1863429http://id.bnportugal.gov.pt/bib/porbase/186342920030529100600.00-521-29514-928915PTBN0084043119880428d1981 k y0pory0103 baengGBApproximation theory and methodsM. J. D. PowellCambridgeCambridge University Press1981X, 339 p.il.23 cm511.3inteng331905PowellM. J. D.1478193PTBNRPC41-01/POWcoopUCMAmq3080741bccoopUCMA0BGUM 511.3coopUMSDmq1014500bccoopUMSD370810MSD6-1207