Barrueco Cruz, J. M., Krichel, T., & Trinidad, J. C. (2003). Organizing current awareness in a large digital library. Presented at the 2003 Conference on Users in Electronic Information Environments in Espoo, Finland, September 8-9, 2003, http://openlib.org/home/ krichel/papers/espoo.pdf.

Bensman, S. J. (2000). Probability distributions in Library and Information Science: A historical and practitioner viewpoint. Journal of the American Society for Information Science and Technology, 51, 16-833.

Chu, H., & Krichel T. (2003). NEP: Current awareness service of the RePEc Digital Library. D-Lib Magazine, 9(12). http://www.dlib.org/ dlib/december03/chu/12chu.html

Dictionary of Library and Information Management, Peter Collin Publishing (1997). Retrieved 01 March 2005, from xreferplus. http://www.xreferplus.com/entry.jsp?xrefid=1039558&secid=.2.-

Freund, R. J. & Wilson, W. J. (2003). Statistical Methods. (2nd ed.). New York: Academic Press.

Hosmer, A. W., & Lemeshow S. (2000). Applied logistic regression. New York: Wiley

Walshe, E. (2001) Creating an academic self-documentation system through digital library interoperability: the RePEc model", The New Review of Information Networking, 7, 43-58.