Using mental load for managing interruptions in physiologically attentive user interfaces. - Daniel Chen 004; Roel Vertegaal (CHI Extended Abstracts, 2004)

OverHear: augmenting attention in remote social gatherings through computer-mediated hearing. - J. David Smith; Matthew Donald; Daniel Chen 004; Daniel Cheng; Changuk Sohn; Aadil Mamuji; David Holman; Roel Vertegaal (CHI Extended Abstracts, 2005)

Designing for augmented attention: Towards a framework for attentive user interfaces. - Roel Vertegaal; Jeffrey S. Shell; Daniel Chen 004; Aadil Mamuji (Comput. Hum. Behav., 2006)

Towards a Physiological Model of User Interruptability. - Daniel Chen 004; Jamie Hart; Roel Vertegaal (INTERACT (2), 2007)