Covering the set of integers by congruence classes of distinct moduli von Choi, S. L. G.

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On Arithmetic Progressions in Sequences von Choi, S. L. G.

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The Largest Sum-Free Subsequence from a Sequence of n Numbers von Choi, S. L. G.

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On Sequences Containing at Most 3 Pairwise Coprime Integers von Choi, S. L. G.

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On sequences not containing a large sum-free subsequence von Choi, S. L. G.

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On Sequences Containing at Most 3 Pairwise Coprime Integers von Choi, S. L. G.

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The Largest Sum-Free Subsequence from a Sequence of n Numbers von Choi, S. L. G.

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Estimation of the Largest Number of Distinct Products From Two Sets of Integers von Choi, S. L. G.

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On a Combinatorial Problem in Number Theory von Choi, S. L. G.

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On a problem concerning two integer sequences von Choi, S. L. G.

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On the Density of Certain Integer Sequences von Choi, S. L. G.

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On sequences with a prescribed number of pairwise sums von Choi, S. L. G.

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Lagrange's Theorem with N 1/3 Squares von Choi, S. L. G., Erdos, Paul, Nathanson, Melvyn B.

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Lagrange’s theorem with ^{1/3} squares von Choi, S. L. G., Erdős, Paul, Nathanson, Melvyn B.

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On irregularities of integer sequences von Choi, S. L. G.

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A direct proof of a theorem of Roth von Choi, S. L. G.

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Lagrange's Theorem with $N^{1/3}$ Squares von Choi, S. L. G., Erdös, Paul, Nathanson, Melvyn B.

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The largest subset in [1,n] whose integers have pairwise l.c.m. not exceeding n von Choi, S. L. G.

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On a theorem of Roth von Choi, S. L. G.

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On sum-free subsequences von Choi, S. L. G., Komlós, J., Szemerédi, E.

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