The role of the IFO business climate indicator and asset prices in German monetary policy presented at CESIfo Conference "Academic use of Ifo survey data" December 2003 - Sterken, Elmer (CES, 2004)
Literaturverz. S. 30 - 33. - Auch im Internet unter den Adressen www.SSRN.com und www.CESifo.de verfügbar