On the Harborth constant of $C_3\oplus C_{3p}$

Guillot, Philippe; Marchan, Luz E.; Ordaz, Oscar; Schmid, Wolfgang A.; Zerdoum, Hanane

Journal de théorie des nombres de Bordeaux, Volume 31 (2019) p. 613-633

On the Olson and the Strong Davenport constants

Ordaz, Oscar; Philipp, Andreas; Santos, Irene; Schmid, Wolfgang A.

Journal de théorie des nombres de Bordeaux, Volume 23 (2011) p. 715-750

Representation of finite abelian group elements by subsequence sums

Grynkiewicz, David J.; Marchan, Luz E.; Ordaz, Oscar

Journal de théorie des nombres de Bordeaux, Volume 21 (2009) p. 559-587