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Hindman, N. (1989). Ultrafilters and ramsey theory — An update. In: Steprāns, J., Watson, S. (eds) Set Theory and its Applications. Lecture Notes in Mathematics, vol 1401. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0097334
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DOI: https://doi.org/10.1007/BFb0097334
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