- Andrzej Sikorski, Yaroslav Ciemnoczolowski:
An Optimized Processing of Parent-Child Structural Join. EJC 2009: 253-257 - Bernhard Thalheim:
Model Suites For Multi-Layered Database Modelling. EJC 2009: 116-134 - Qing Wang, Klaus-Dieter Schewe, Bernhard Thalheim:
A Fixed-Point Query Language for XML. EJC 2009: 226-246