References
I. Z. Ruzsa: Arithmetical progressions and the number of sums, to appear inPeriodica Math. Hung.
I. Z. Ruzsa: Generalized arithmetical progressions and sum sets, in preparation.
E. Szemerédi: On sets of integers containing nok elements in arithmetic progression,Acta Arithmetica 27 (1975), 299–345.
E. Szemerédi: Regular partitions of graphs,Problèmes Combinatories at Theorie des Graphes, (Ed. J-C. Bermond, et al.), CNRS aris, (1978), 399–401.
E. Szemerédi: no title, in preparation.
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Research supported by Hungarian NFSR grant 1901.