Category-Based Filtering in Recommender Systems for Improved Performance in Dynamic Domains. - Mikael Sollenborn; Peter Funk 001 (AH, 2002)

Category-Based Filtering and User Stereotype Cases to Reduce the Latency Problem in Recommender Systems. - Mikael Sollenborn; Peter Funk 001 (ECCBR, 2002)

Advancements and Trends in Medical Case-Based Reasoning: An Overview of Systems and System Development. - Markus Nilsson; Mikael Sollenborn (FLAIRS, 2004)