Haspelmath, Martin Department of Linguistics, Max Planck Institute for Evolutionary Anthropology, Max Planck Society;
Haspelmath, M., Calude, A., Spagnol, M., Narrog, H., & Bamyaci, E. (2014). Coding causal–noncausal verb alternations: A form–frequency correspondence explanation. Journal of Linguistics, 50(3), 587-625. doi:10.1017/S0022226714000255.