Robustness and Efficiency in AGFL. - Caspar Derksen; Cornelis H. A. Koster; Erik Oltmans (IWPT, 1997)

Normalization and Matching in the DORO System. - Cornelis H. A. Koster; Caspar Derksen; D. van de Ende; J. Potjer (BCS-IRSG Annual Colloquium on IR Research, 1999)