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LIBBY, L. M.; PANDOLFI, L. J. Temperature Dependence of Isotope Ratios in Tree Rings. Proceedings of the National Academy of Sciences of the United States of America. 1974-06, roč. 71, čís. 6, s. 2482–2486. PMID: 16592163
PMCID: PMC388483. Dostupné online [cit. 2023-03-20]. ISSN0027-8424. doi:10.1073/pnas.71.6.2482. PMID16592163.
Leona Marshall Libby Dies; Sole Woman to Work on Fermi's 1st Nuclear Reactor - Los Angeles Times. web.archive.org [online]. 2020-05-11 [cit. 2023-03-20]. Dostupné v archivu pořízeném z originálu dne 2020-05-11.
LIBBY, L. M.; PANDOLFI, L. J. Temperature Dependence of Isotope Ratios in Tree Rings. Proceedings of the National Academy of Sciences of the United States of America. 1974-06, roč. 71, čís. 6, s. 2482–2486. PMID: 16592163
PMCID: PMC388483. Dostupné online [cit. 2023-03-20]. ISSN0027-8424. doi:10.1073/pnas.71.6.2482. PMID16592163.