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Optics and Spectroscopy . Nature 187, 199 (1960). https://doi.org/10.1038/187199a0
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DOI: https://doi.org/10.1038/187199a0
Nature volume 187, page 199 (1960)
Optics and Spectroscopy . Nature 187, 199 (1960). https://doi.org/10.1038/187199a0
Issue Date:
DOI: https://doi.org/10.1038/187199a0