Hajnal, András; Kalmár, László Remarks on Gödel’s axiomatics of set theory. I, II. (Bemerkungen zum Gödelschen Axiomensystem der Mengenlehre. I, II.) (Hungarian) Zbl 0075.00901 Mat. Lapok 7, 26-42 (1956); ibid. 7, 218-229 (1956). Reviewer: András Ádám MSC: 03E30 PDFBibTeX XMLCite \textit{A. Hajnal} and \textit{L. Kalmár}, Mat. Lapok 7, 26--42, 218--229 (1956; Zbl 0075.00901)
Hajnal, András; Kalmár, László An elementary combinatorial theorem with an application to axiomatic set theory. (English) Zbl 0071.01005 Publ. Math. Debr. 4, 431-449 (1956). MSC: 03E30 PDFBibTeX XMLCite \textit{A. Hajnal} and \textit{L. Kalmár}, Publ. Math. Debr. 4, 431--449 (1956; Zbl 0071.01005)