InfoSky: Visual Exploration of Large Hierarchical Document Repositories - Kappe, Frank; Droschl, Georg; Kienreich, Wolfgang; Sabol, Vedran; Becker, Jutta; Andrews, Keith; Granitzer, Michael; Tochtermann, Klaus; Auer, Peter (Human-Centered Computing: Cognitive, Social, and Ergonomic Aspects: Proceedings of the HCI International, 2003)