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.

Archibald, Sally, Carla Staver, and Simon Levin. (2012) 2012. “Evolution of Human-Driven Fire Regimes in Africa.”. Proceedings of the National Academy of Sciences of the United States of America 109 (3): 847-52. doi:10.1073/pnas.1118648109.

Arrow, Kenneth, and Simon Levin. (2009) 2009. “Intergenerational Resource Transfers With Random Offspring Numbers.”. Proceedings of the National Academy of Sciences of the United States of America 106 (33): 13702-6. doi:10.1073/pnas.0905613106.

Arrow, K, B Bolin, R Costanza, P Dasgupta, C Folke, C Holling, B Jansson, et al. (1995) 1995. “Economic Growth, Carrying Capacity, and the Environment.”. Science (New York, N.Y.) 268 (5210): 520-1.