An upper bound for Hilbert cubes.

Csaba Sándor An upper bound for Hilbert cubes. 1157-1159 2007 114 J. Comb. Theory, Ser. A 6 http://dx.doi.org/10.1016/j.jcta.2006.11.004 db/journals/jct/jcta114.html#Sandor07