Definitions of Compactness and The Axiom of Choice. - Omar De la Cruz; Eric J. Hall; Paul E. Howard; Jean E. Rubin; Adrienne Stanley (J. Symb. Log., 2002)

Products of Compact Spaces and the Axiom of Choice. - Omar De la Cruz; Eric J. Hall; Paul E. Howard; Kyriakos Keremedis; Jean E. Rubin (Math. Log. Q., 2002)

Products of compact spaces and the axiom of choice II. - Omar De la Cruz; Eric J. Hall; Paul E. Howard; Kyriakos Keremedis; Jean E. Rubin (Math. Log. Q., 2003)

Metric spaces and the axiom of choice. - Omar De la Cruz; Eric J. Hall; Paul E. Howard; Kyriakos Keremedis; Jean E. Rubin (Math. Log. Q., 2003)

Properties of the real line and weak forms of the Axiom of Choice. - Omar De la Cruz; Eric J. Hall; Paul E. Howard; Kyriakos Keremedis; Eleftherios Tachtsis (Math. Log. Q., 2005)

Invited Keynote Talk: Set-Level Analyses for Genome-Wide Association Data. - Dan L. Nicolae; Omar De la Cruz; William Wen; Baoguan Ke; Minsun Song (ISBRA, 2008)

Unions and the axiom of choice. - Omar De la Cruz; Eric J. Hall; Paul E. Howard; Kyriakos Keremedis; Jean E. Rubin (Math. Log. Q., 2008)

Implementation of Jefferson-d'Hondt rule in the formation of a parliamentary committee. - Joaquín Pérez Ortega; Omar De la Cruz (Soc. Choice Welf., 2014)