Agosti, M., Crivellari, F. & Di Nunzio, G. (2012). Web log analysis: a review of a decade of studies about information acquisition, inspection and interpretation of user interaction. Data Mining and Knowledge Discovery, 24, 663-696. doi: 10.1007/s10618-011-0228-8

Hu, M. & Liu, B. (2004). Mining and summarizing customer reviews. Proceedings of the tenth ACM SIGKDD international conference on Knowledge discovery and data mining (p./pp. 168--177), New York, NY, USA: ACM. ISBN: 1-58113-888-1