1. Albin, C. (1999). Can NGOs enhance the effectiveness of international negotiation? International Negotiation, 4(3), 371–387.
2. Arts, B. (1998). The political influence of global NGOs: Case studies on the climate and biodiversity conventions. Utrecht: International Books.
3. Arts, B. (2003). Non-state actors in global governance. A power analysis. Paper prepared for the 2003 ECPR Joint Sessions, Edinburgh, Scotland.
4. Baetschmann, G., Staub, K., & Winkelmann, R. (2011). Consistent estimation of the fixed effects ordered logit model. Working Paper No. 4. Zurich: University of Zurich.
5. Barry, B. (1978). Sociologists, economists, and democracy. Chicago, IL: University of Chicago Press.