DTI - Economics Papers related to SIA
on this page (lots of good stuff)n is:

J Butler, H Cameron, I Miles 2000,

Grasping the Nettle: a Feasibility Study concerning a Programme for research into the measurement and valuation of intangible assets

Report prepared for DTI: CRIC & PREST, University of Manchester, March 2000 49pp

at: http://www.dti.gov.uk/files/file18830.pdf

Now on IPTS website:
Ramon Compañó, Corina Pascu, Jean-Claude Burgelman (JRC-IPTS),
Michael Rader (ITAS-FSK),
Roberto Saracco, Graziella Spinelli (TILAB),
Bernhard Dachs, Matthias Weber, Sami Mahroum (ARC-SYS),
Rafael Popper, Lawrence Green, Ian Miles (PREST) 2006
Foresight On Information Society Technologies For The European Research Area (Fistera): Key Findings
IPTS, Technical Report Series, EUR 22319.en
ISBN 92-79-02753-0 and ISSN: 1018-5593
is now downloadable from: ftp://ftp.jrc.es/pub/EURdoc/eur22319en.pdf

see the page at http://www.jrc.es/cfapp/reports/year.cfm?year=2006 for other IPTS reports, including some FISTERA.