Bulkeley, H., Andonova, L., Backstrand, K., Betsill, M., Compagnon, D., Duffy, R., Kolk, A., Hoffman, M., Levy, D., Newell, P., Milledge, T., Paterson, M., Pattberg, P., VanDeveer, S., "Governing climate change transnationally: assessing the evidence from a database of sixty initiatives", Environment and Planning C: Government and Policy, 2012