1. Brown, T.C., Buhler, J.P.: Lines imply spaces in density Ramsey theory. J. Comb. Theory A 36, 214–220 (1984)
2. Dodos, P., Kanellopoulos, V., Tyros, K.: A simple proof of the density Hales-Jewett theorem. Intern. Math. Res. Not. (2013, to appear). Available in online
http://imrn.oxfordjournals.org/content/early/2013/03/15/imrn.rnt041.abstract
3. Erdős, P., Hajnal, A., Máté, A., Rado, R.: Combinatorial Set Theory: Partition Relations for Cardinals. North-Holland, Amsterdam (1984)
4. Furstenberg, H., Katznelson, Y.: A density version of the Hales-Jewett theorem. J. Anal. Math. 57, 64–119 (1991)
5. Polymath, D.H.J.: A new proof of the density Hales-Jewett theorem. Ann. Math. 175, 1283–1327 (2012)