1. Old and new problems and results in combinatorial number theory, L'Enseignement Math;Erdös;Monographie No. 28,1980
2. A combinatorial theorem;Erdös;J. London Math. Soc.,1950
3. An ergodic theorem for commuting transformations;Fürstenberg;J. Analyse Math.,1978
4. Canonical Partition Theorems for Parameter-Sets;Prömel,1981
5. Studien zur Kombinatorik;Rado;Math. Z.,1933