works+cited

Maja


 * Neumann, Andreas W. "A Survey of Recommender Systems at Major STI Providers." Recommender Systems for Information Providers: Designing Customer Centric Paths to Information. Heidelberg: Physica-Verlag, 2009. Print.
 * Pine II, B.J., Peppers, D., and Rogers, M. 1995. Do you want to keep your customers forever? //Harvard Business School Review,// 2(1995):103–114.Print
 * Reichheld, F. "Loyalty-based management". //Harvard Business School Review.// 2(1993):64–73.Print.
 * Reichheld, F. and Sasser,W.E. "Zero defections: Quality comes to services". //Harvard Business School Review//. 5(1990):105–111.Print.
 * Schafer, J. B., Konstan, J.A. & Riedl,J."E-Commerce Recommendation Applications".//Data Mining and Knowledge Discovery//. 5 (2001): 115–153.Print.