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Work supported in part by U. S. Air Force Contract AF 18 (600)-1494.
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Steenrod, N.E., Thomas, E. Cohomology operations derived from cyclic groups. Commentarii Mathematici Helvetici 32, 129–152 (1958). https://doi.org/10.1007/BF02564575
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DOI: https://doi.org/10.1007/BF02564575