P. Brusilovsky, и D. Cooper. Proceedings of the 7th international conference on Intelligent user interfaces, стр. 23--30. New York, NY, USA, ACM, (2002)
R. Neßelrath. Proceedings of the 9th International Conference on Intelligent Environments (IE). International Conference on Intelligent Environments (IE-13), July 18-19, Athen, Greece, стр. 266-269. Washington, DC, USA, IEEE Computer Society, (2013)