• "e-Butler: An Architecture of a Customer-Centric Personalization System," International Journal of Computational Intelligence and Applications, vol. 2, no 3, October 2002 (with G. Adomavicius).
  
  
• "Personalization Technologies: A Process-Oriented Perspective." Communications of the ACM, 48(1), October 2005 (with G. Adomavicius).
  
  
• "Personalization: The State of the Art and Future Directions." In Business Computing, vol. 3 in Handbooks in Information Systems, Emerald Publishing, 2009.