On Wendt's determinant. - Charles Helou (Math. Comput., 1997)

Bases in some additive groups and the Erds-Tura'n conjecture. - Labib Haddad; Charles Helou (J. Comb. Theory A, 2004)

Analytic Erdös-Turán conjectures and Erdös-Fuchs theorem. - Labib Haddad; Charles Helou; Jukka Pihko (Int. J. Math. Math. Sci., 2005)

Supremum of Representation Functions. - Georges Grekos; Labib Haddad; Charles Helou; Jukka Pihko (Integers, 2011)

Finite Sequences Dominated by the Squares. - Labib Haddad; Charles Helou (J. Integer Seq., 2015)

Characterization of Representation Functions. - Charles Helou (Integers, 2017)