1. J. Baumgartner and A. Hajnal,A proof (involving Martin’s axiom) of a partition relation, Fundamenta Mathematicae78 (1973), 193–203.
2. P. Erdős, A. Hajnal, A. Máté and R. Rado,Combinatorial Set Theory, Partition Relations for Cardinals, Studies in Logic and the Foundations of Mathematics, Disquisitiones Mathematicae, North-Holland and Akadémiai Kiadó, 1984.
3. F. Galvin, Handwritten notes.
4. Colloq. Math. Soc. János Bolyai;F. Galvin,1975
5. A. Hajnal,Some results and problems on set theory, Acta Mathematica Academiae Scientiarum Hungaricae11 (1960), 277–298.