1. The ecology of commerce: declaration of sustainability;Hawken,1993
2. Changing course: a global business perspective on development and the environment;Shmidheiny,1992
3. Walking the talk: the business case for sustainable development;Holliday,2002
4. Does improving a firm's environmental management system and environmental performance result in a higher stock price?;Feldman;ICF Kaiser International,1996
5. Environment drives financial performance: the jury is in;Kiernan;Environmental Quality Management,1997