1. Fifty shades of open;Pomerantz;FM
2. Homesteading the noosphere;Raymond;First Monday
3. Knowledge sharing among inventors: Some historical perspectives;Bessen;LEM Paper Series
4. Open Knowledge FoundationOpen Definition 2.1Open Data Handbookhttps://opendefinition.org/od/2.1/en/
5. World Wide Web Consortium (W3C)Definition of Open StandardsWorld Wide Web Consortium (W3C)https://www.w3.org/2005/09/dd-osd.html