MathSciNet bibliographic data MR1623032 (2000c:03026) 03C20 (03E05) Lipparini, Paolo Every $(\lambda\sp +,\kappa\sp +)$$(\lambda\sp +,\kappa\sp +)$-regular ultrafilter is $(\lambda,\kappa)$$(\lambda,\kappa)$-regular. Proc. Amer. Math. Soc. 128 (2000), no. 2, 605–609. Article

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