Miller Edwin W.. On a property of families of sets. English with Polish summary. Sprawozdania z posiedzeń Towarzystwa Naukowego Warszawskiego (Comptes rendus des séances de la Société des Sciences et des Lettres de Varsovie), Class III, vol. 30 (1937), pp. 31–38.Dushnik Ben and E. W. Miller. Partially ordered sets. American journal of mathematics, vol. 63 (1941), pp. 600–610.Erdős P.. Some set-theoretical properties of graphs. Revista, Universidad Nacional de Tucumán, Serie A, Matemáticas y física teórica, vol. 3 (1942), pp. 363–367.Fodor G.. Proof of a conjecture of P. Erdős. Acta scientiarum mathematicarum, vol. 14 no. 4 (1952), pp. 219–227.Erdős P. and R. Rado. A partition calculus in set theory. Bulletin of the American Mathematical Soc