O'Connor, S.; Ono, R.; Clarkson, C. (24 November 2011). "Pelagic Fishing at 42,000 Years Before the Present and the Maritime Skills of Modern Humans". Science. 334 (6059): 1117–1121. doi:10.1126/science.1207703. PMID22116883.
nih.gov
pubmed.ncbi.nlm.nih.gov
O'Connor, S.; Ono, R.; Clarkson, C. (24 November 2011). "Pelagic Fishing at 42,000 Years Before the Present and the Maritime Skills of Modern Humans". Science. 334 (6059): 1117–1121. doi:10.1126/science.1207703. PMID22116883.