1. Epidos News No. 3 2003 p7 pub. European Patent Office. ISSN 1024 6673, ibid No. 2 2004 p5.
2. Distance learning from the european patent office;Feinaeugle;World Pat. Inf.,2006
3. IPTK Search Tools in Intellectual Property Teaching Kit European Patent Office;Clarke,2015
4. The Handbook of European Intellectual Property Management;Clarke,2009
5. Wolfgang Pilch. Principal Director Patent Information European Patent Office 2003–2008 private communication.