1. Promoting innovation for environment by green patent system;Hsu,1999
2. Design for environment;Fiksel,1996
3. Life cycle design, a manual for small and medium sized enterprises,1997
4. Development product design methodology by using life cycle assessment for design for environment tasks;Chen,1999
5. And suddenly the inventor appeared-TRIZ, the theory of inventive problem solving;Ahshuller,1996