Hajnal, András The set-theoretical work of P. Erdős. (Hungarian) Zbl 0256.01015 Mat. Lapok 22(1971), 197-208 (1972). MSC: 01A65 PDFBibTeX XMLCite \textit{A. Hajnal}, Mat. Lapok 22, 197--208 (1972; Zbl 0256.01015)
Erdős, Pál; Hajnal, András On a combinatorial problem. (Hungarian. English summary) Zbl 0179.02801 Mat. Lapok 19, 345-348 (1968). MSC: 05D05 03E05 PDFBibTeX XMLCite \textit{P. Erdős} and \textit{A. Hajnal}, Mat. Lapok 19, 345--348 (1968; Zbl 0179.02801)
Erdős, Pál; Hajnal, András On chromatic graphs. (Hungarian) Zbl 0152.41201 Mat. Lapok 18, 1-4 (1967). Reviewer: Cs.Pogány MSC: 05C15 PDFBibTeX XMLCite \textit{P. Erdős} and \textit{A. Hajnal}, Mat. Lapok 18, 1--4 (1967; Zbl 0152.41201)
Hajnal, András On the history and present state of axiomatic research concerning the continuum problem and the axiom of choice. (Hungarian) Zbl 0147.25404 Mat. Lapok 17, 253-260 (1966). PDFBibTeX XMLCite \textit{A. Hajnal}, Mat. Lapok 17, 253--260 (1966; Zbl 0147.25404)
Hajnal, András The work of J. von Neumann in the axiomatic set-theory. (Hungarian) Zbl 0086.00604 Mat. Lapok 10, 5-11 (1959). MSC: 01A70 03-03 PDFBibTeX XMLCite \textit{A. Hajnal}, Mat. Lapok 10, 5--11 (1959; Zbl 0086.00604)
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)