Physicists at the Max Planck Institute are puzzled-they have been playing with marbles and talking about magic numbers. But this is no holiday-season silliness, explains Philip Ball.
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Ball, P. Losing their marbles?. Nature (1999). https://doi.org/10.1038/news000106-4
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DOI: https://doi.org/10.1038/news000106-4
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