Engel, Christoph Max Planck Institute for Research on Collective Goods, Max Planck Society;
https://doi.org/10.1146/annurev-lawsocsci-050420-012835 (Any fulltext)
Engel, C., & Weinshall, K. (2022). Diffusion of Legal Innovations. Annual Review of Law and Social Science, 18, 139-152.