Mutation enhances cooperation in direct reciprocity.
Proc Natl Acad Sci U S A. 2023 May 16;120(20):e2221080120. doi: 10.1073/pnas.2221080120. Epub 2023 May 8. Proc Natl Acad Sci U S A. 2023. PMID: 37155877 Free PMC article.