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Proceedings of the National Academy of Sciences of the United States of America logoLink to Proceedings of the National Academy of Sciences of the United States of America
. 1957 Jan 15;43(1):173–175. doi: 10.1073/pnas.43.1.173

FUNCTION RINGS ON THE CIRCLE

J Wermer 1
PMCID: PMC528405  PMID: 16589994

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