Patent search and analysis on the national DRM R&D project 并列题名：Patent search and analysis on the national DRM R&D project Collection of standards on the national DRM R&D project Selected edition of theses on the national DRM R&D project Process management and quality control on the national DRM R&D project and other true tales from the national story project Techno—economic analysis of international project 并列题名：Collection of standards on the national DRM R&D project