The Effect of Shading in Extracting Structure from Space-Filling Visualizations. - Pourang Irani; Dean Slonowsky; Peer Shajahan (IV, 2004)

Representing Hierarchies Using Multiple Synthetic Voices. - Peer Shajahan; Pourang Irani (IV, 2004)

VoiceMarks: restructuring hierarchical voice menus for improving navigation. - Pourang Irani; Peer Shajahan; Christel Kemke (Int. J. Speech Technol., 2006)

Human perception of structure in shaded space-filling visualizations. - Pourang Irani; Dean Slonowsky; Peer Shajahan (Inf. Vis., 2006)

One family, many voices: Can multiple synthetic voices be used as navigational cues in hierarchical interfaces? - Peer Shajahan; Pourang Irani (Int. J. Speech Technol., 2007)