Lasse Berntzen Marte Winsvold Web-Based Tools for Policy Evaluation. 13-24 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3416&spage=13 2005 conf/tcgov/2005 TCGOV db/conf/tcgov/tcgov2005.html#BerntzenW05