Estimating Positions and Radiances of a Small Number of Light Sources for Real-Time Image-Based Lighting. - Claus B. Madsen; Mads K. D. Sorensen; Michael Vittrup (Eurographics (Short Presentations), 2003)

Immersive Visual Data Mining: The 3DVDM Approach. - Henrik R. Nagel; Erik Granum; Søren Bovbjerg; Michael Vittrup (Visual Data Mining, 2008)