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Telecommunications. Nature 223, 335 (1969). https://doi.org/10.1038/223335a0
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DOI: https://doi.org/10.1038/223335a0
Nature volume 223, page 335 (1969)
Telecommunications. Nature 223, 335 (1969). https://doi.org/10.1038/223335a0
Issue Date:
DOI: https://doi.org/10.1038/223335a0