MathSciNet bibliographic data MR141603 (25 #5001) 04.60 Erdős, P.; Hajnal, A. Some remarks concerning our paper "On the structure of set-mappings''. Non-existence of a two-valued $\sigma$$\sigma$-measure for the first uncountable inaccessible cardinal. Acta Math. Acad. Sci. Hungar. 13 1962 223–226. Article

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