The largest subset in [1,n] whose integers have pairwise l.c.m. not exceeding n, II S. Choi — 1976 Acta Arithmetica
Note on sequences well-spaced and well-distributed among congruence classes S. Choi — 1974 Acta Arithmetica
Some additive and multiplicative problem sin number theory S. Choi; P. Erdös; E. Szemerédi — 1975 Acta Arithmetica
A singular Gierer—Meinhardt system of elliptic equations Y. S. Choi; P. J. McKenna — 2000 Annales de l'I.H.P. Analyse non linéaire