MetrikaJune 2002, Volume 55, Issue 3, pp 271–278 | Cite asBook ReviewsAuthorsAuthors and affiliations 85 Downloads This is a preview of subscription content, log in to check access.PreviewUnable to display preview. Download preview PDF.Unable to display preview. Download preview PDF.Copyright information© Springer-Verlag Berlin Heidelberg 2002Authors and Affiliations There are no affiliations available