![](http://www.rhinoresourcecenter.com/style_images/1/cat_arrow.gif) | Heintz, A. E., 1966. New radiocarbon (C14) age determinations of mammal remains from the permafrost in Siberia. Norsk Geologisk Tidsskrift 46: 215-217
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![](http://www.rhinoresourcecenter.com/style_images/1/cat_arrow.gif) | Heintz, A. E.; Garutt, V. E., 1965. Determination of the absolute age of the fossil remains of mammoth and woolly rhinoceros from the permafrost in Siberia by the help of radiocarbon (C14). Norsk Geologisk Tidsskrift 45: 73-79
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