Appropriateness of Graphical Program Representations for Training Applications. - Marian G. Williams; Hyxia Villegas; J. Nicholas Buehler (CHI Conference Companion, 1996)

Medical Decision-Making and Collaborative Reasoning. - José Quintero; Antonio Aguilera; Maryvonne Abraham; Hyxia Villegas; Guillermo Montilla; Basel Solaiman (BIBE, 2001)

A Software Tool for Reading DICOM Directory Files. - Ricardo Villegas; Guillermo Montilla; Hyxia Villegas (Int. J. Heal. Inf. Syst. Informatics, 2007)