Nadel, D., Danin, A., Power, R. C., Rosen, A. M., Bocquentin, F., Tsatskin, A., et al. (2013). Earliest floral grave lining from 13,700–11,700-y-old Natufian burials at Raqefet Cave, Mt. Carmel, Israel. Proceedings of the National Academy of Sciences of the United States of America, 110(29), 11774-11778. doi:10.1073/pnas.1302277110.