Axiom - A Modular Visual Object Retrieval System. - Jochen Wickel; Pablo Alvarado; Peter Dörfler; Thomas Krüger; Karl-Friedrich Kraiss (KI, 2002)

Extracting Symbolic Descriptors for Interactive Object Retrieval. - Jochen Wickel; Pablo Alvarado; Karl-Friedrich Kraiss (SCIA, 2003)