00282nam a2200109 a 450000500170000008200200001710000230003724500290006026000250008930000230011463000350013720251202164229.0  a330.015195bHIL  aHildebrand Werner.  aAdvances in econometrics  aCambridgebCUPc1985  a301 p.b22 cm.cHB  aEconomics- Mathematical models