Weisberg, Michael, Koko Warner, Zinta Zommers, Youssef Nassef, Simon Levin, and Erol Akçay. n.d. “Dynamic Climate Risk and the Vulnerability Ratchet”. Center for Open Science. doi:10.31235/osf.io/p4eka_v1.
Akçay, Erol, Adam Meirowitz, Kristopher Ramsay, and Simon Levin. (2012) 2012. “Evolution of Cooperation and Skew under Imperfect Information.”. Proceedings of the National Academy of Sciences of the United States of America 109 (37): 14936-41. doi:10.1073/pnas.1212925109.