Gyárfás, A. (1975), "On Ramsey covering-numbers", Infinite and finite sets (Colloq., Keszthely, 1973; dedicated to P. Erdős on his 60th birthday), Vol. II, Colloq. Math. Soc. János Bolyai, vol. 10, Amsterdam: North-Holland, pp. 801–816, MR0382051
doi.org
Erdős, Paul; Gyárfás, András; Kohayakawa, Yoshiharu (1997). "The size of the largest bipartite subgraphs". Discrete Mathematics. 177 (1–3). Elsevier BV: 267–271. doi:10.1016/s0012-365x(97)00004-6. ISSN0012-365X.