FundExplorer: Supporting the Diversification of Mutual Fund Portfolios Using Context Treemaps. - Christoph Csallner; Marcus Handte; Othmar Lehmann; John T. Stasko (INFOVIS, 2003)

From Home to World - Supporting Context-aware Applications through World Models. - Othmar Lehmann; Martin Bauer 001; Christian Becker 001; Daniela Nicklas 001 (PerCom, 2004)