TY - CHAP ID - Gebhardt1997a T1 - Parallel combination of information sources A1 - Gebhardt, Jörg A1 - Kruse, Rudolf ED - Gabbay, D. M. ED - Smets, Philippe T3 - Handbook of Defeasible Reasoning and Uncertainty Management Syst Y1 - 1997 VL - 1 PB - Kluwer AD - Dordrecht ER -