Media type: E-Article Title: On the Efficiency of Unobserved Components Models : A Comment : A Comment Contributor: Goldrian, Georg imprint: Walter de Gruyter GmbH, 2004 Published in: Jahrbücher für Nationalökonomie und Statistik Language: English DOI: 10.1515/jbnst-2004-0607 ISSN: 2366-049X; 0021-4027 Keywords: Economics and Econometrics ; Social Sciences (miscellaneous) ; General Business, Management and Accounting Origination: Footnote: