The right story at the right time. - W. Mike Martin; Ann Heylighen; Humberto Cavallin (AI Soc., 2005)

Different by design. - W. Mike Martin; Renate Fruchter; Humberto Cavallin; Ann Heylighen (Artif. Intell. Eng. Des. Anal. Manuf., 2007)

How relative absolute can be: SUMI and the impact of the nature of the task in measuring perceived software usability. - Humberto Cavallin; W. Mike Martin; Ann Heylighen (AI Soc., 2007)