I herewith declare t h a t Mr A.Putter i s an industrious and
able student of econoraetrics who followed my l e c t u r e s for two years
and a c t i v e l y p a r t i c i p a t e d in the d i s c u s s i o n s . I gladly refcomnend
him for p a r t i c i p a t i o n in the surainer course of the London U n i v e r s i t y .
Professor of Econometrics
Rotterdam School of Economic