Nawrocki, P., Śnieżynski, B., & Czyżewski, J. (2016). Learning Agent for a Service-Oriented Context-Aware Recommender System in Heterogeneous Environment. Computing and Informatics, 35(5), 1005–1026. https://cai.type.sk/content/2016/5/learning-agent-for-a-service-oriented-context-aware-recommender-system-in-heterogeneous-environment/