Alternativen zur legislatorischen Rechtsvereinheitlichung || International Encyclopedia of Comparative Law. Under the Auspices of the International Association of Legal Science. Vol. 14: Copyright and Industrial Property. – Chap. 1: General Questions – The International Conventions. – Chap. 2: Copyright – National and International Development/Chap. 3: Copyright – Comparison of Laws. (1990.) 102S. – Chap. 6: Inventors' Certificates, Rationalization Proposals and Discoveriesby Stig Strömholm; Stojan Pretnar; Eugen Ulmer; Friedrich-Karl Beier; Gerhard Schricker