Integrative geochronology calibrates the Middle and Late Stone Ages of Ethiopia's Afar Rift.
Proc Natl Acad Sci U S A. 2021 Dec 14;118(50):e2116329118. doi: 10.1073/pnas.2116329118. Proc Natl Acad Sci U S A. 2021. PMID: 34873047 Free PMC article.