1. Anadarko Petroleum Corporation, Noble Energy Inc, and PDC Energy Inc 2012 Initial Pre-Hearing Statement of Anadarko Petroleum Corporation, Noble Energy Inc, and PDC Energy Inc http://cogcc.state.co.us/RR_HF2012/Groundwater/PrehearingStatements/Initial%20Pre-Hearing%20Statement%20of%20Anadarko%20Noble%20and%20PDC.pdf
2. Collaborative governance in theory and practice;Ansell;Journal of Public Administration Research and Theory,2007
3. Negotiated environmental and occupational health and safety agreements in the United States: lessons for policy;Ashford;Journal of Cleaner Production,2001
4. Two faces of power;Bachrach;American Political Science Review,1962