XQuery by the Book: The IPSI XQuery Demonstrator. - Peter Fankhauser; Tobias Groh; Sven Overhage (EDBT, 2002)

Time-Variant Analysis of Nonlinear Stability and Bispectral Measures to Quantify the Development of Fetal Sleep States. - Karin Schwab; Tobias Groh; Matthias Schwab; Herbert Witte (EMBC, 2006)