Kvavadze E, Bar-Yosef O, Belfer-Cohen A, Boaretto E,Jakeli N, Matskevich Z, Meshveliani T. [Supporting Online Material 30,000-Year-Old Wild Flax Fibers] 请检查|url=值 (帮助). 科学. 2009, 325 (5946): 1369. doi:10.1126/science.1175404.
Kvavadze E, Bar-Yosef O, Belfer-Cohen A, Boaretto E,Jakeli N, Matskevich Z, Meshveliani T. [Supporting Online Material 30,000-Year-Old Wild Flax Fibers] 请检查|url=值 (帮助). 科学. 2009, 325 (5946): 1369. doi:10.1126/science.1175404.