CEC (1989). Guidelines for improving the synergy between public and private sectors in the information market. Retrieved January 10, 2017, from https://ec.europa.eu/digital single-market/en/news/guidelines-improving-synergy-between-public-and-private sectors-information-market.

Saxby, S.J. (1996). Public policy and legal regulation of the information market in the digital network environment. (PhD thesis), Oslo: Tano Press.

Worlock, D. (1997). Real policy or ‘Virtual policy’? A case study of tradeable information policy. In I. Rowlands (Ed.), Understanding information policy (pp. 146–158). London: Bowker Saur.