6Tullo C. Managing public sector information more coherently (2nd annual seminar). [2008 -04 -06]. http://www, appsi, gov. uk/ minmes/2005-03-17, pdf.
7PIRA International. Commercial exploitation of Europe' s public sector information. [ 2006 - 10 -02 ]. http://www, ec-gis, org/ docs/F15363/PIRA. PDF.
8Weiss P. Borders in cyberspace: conflicting public sector information policies and their economic impacts. [ 2008 - 09 - 11 ]. http ://www. weather, gov/sp/Borders_report, pdf.
9Pas J. The Commercialization of Government Information and the Proposal for a Directive COM (2002) 207 by the European Commission. Murdoch University Electronic Journal of Law, 2002. [ 2006 - 07 - 16 ]. http ://www. murdoch, edu. au/elaw/.
10Longhorn R, Blakemore M. Revisiting the valuing and pricing of digital geographic information. Journal of Digital Information, 2004 (4) :1 - 12.
