1. Alon, N., Spencer, J.H.: The Probabilistic Method, 3rd edn. John Wiley & Sons Inc., Chichester (2008)
2. Erdős, P., Lovász, L.: Problems and results on 3-chromatic hypergraphs and some related questions. In: Hajnal, A., Rado, R., Sós, V.T. (eds.) Infinite and Finite Sets (to Paul Erdős on his 60th birthday), vol. II, pp. 609–627. North-Holland, Amsterdam (1975)
3. Erdős, P.: On a combinatorial problem. Nordisk Mat. Tidskr. 11, 5–10, 40 (1963)
4. Erdős, P.: On a combinatorial problem. II. Acta Math. Acad. Sci. Hungar. 15, 445–447 (1964)
5. Shearer, J.B.: On a problem of Spencer. Combinatorica 5(3), 241–245 (1985)