1. Lecture Notes in Computer Science;M. Morzy,2006
2. Gregg, D.G., Scott, J.: A Typology of Complaints About Ebay Sellers. Communications of The ACM 51(4) (April 2008)
3. Lucking- Reiley, D., Bryan, D., Prasa, N., Reeves, D.: Pennies from eBay: The Determinants of Price in Online Auctio ns (1999), http://eller.arizona.edu/~reiley/papers/PenniesFromEBay.pdf
4. Bajari, P., Hortacsu, A.: Winner’s Curse, Reserve Prices and Endogenous entry: Empirical Insights from eBay Auctions. Stanford Institute for Economic Policy Research. SIEPR. Policy paper No. 99-23 (1999)
5. Wawer, A., Nielek, R.: Application of Automated Sentiment Extraction from Text to Modeling of Public Opinion Dynamics. Journal of Environmental Studies 17(3B), 508–513 (2008) (in Polish)