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Geometrical Optics. Nature 199, 753 (1963). https://doi.org/10.1038/199753a0
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DOI: https://doi.org/10.1038/199753a0
Nature volume 199, page 753 (1963)
Geometrical Optics. Nature 199, 753 (1963). https://doi.org/10.1038/199753a0
Issue Date:
DOI: https://doi.org/10.1038/199753a0