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Lasers, Gratings and Microcircuits. Nature 232, 520 (1971). https://doi.org/10.1038/232520b0
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DOI: https://doi.org/10.1038/232520b0
Nature volume 232, page 520 (1971)
Lasers, Gratings and Microcircuits. Nature 232, 520 (1971). https://doi.org/10.1038/232520b0
Issue Date:
DOI: https://doi.org/10.1038/232520b0