{"id":"urton2005khipu","DOI":"10.1126/science.1113426","URL":"https://doi.org/10.1126/science.1113426","type":"article-journal","title":"Khipu Accounting in Ancient Peru","author":[{"given":"Gary","family":"Urton"},{"given":"Carrie J.","family":"Brezine"}],"issued":{"date-parts":[[2005]]},"year-text":"2005","container-title":"Science 309(5737), 1065-1067","catalog-key":"SRC0D4V7QJ41MAZ"}