1. British Museum natural radiocarbon measurements VII;Barker;Radiocarbon,1971
2. Liquid Scintillation counting of low levels of carbon-14 for radiocarbon dating;Burleigh,1972
3. National Physical Laboratory Radiocarbon Measurements III;Callow;Radiocarbon,1965
4. A study of sampling and pretreatment of materials for radiocarbon dating;Dresser,1970
5. An Introduction to Liquid Scintillation Counting;Dyer,1974