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Mathematics at the University of Lancaster. Nature 202, 441 (1964). https://doi.org/10.1038/202441c0
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DOI: https://doi.org/10.1038/202441c0
Nature volume 202, page 441 (1964)
Mathematics at the University of Lancaster. Nature 202, 441 (1964). https://doi.org/10.1038/202441c0
Issue Date:
DOI: https://doi.org/10.1038/202441c0