1. Baeza-Yates, R., Ribeiro-Neto, B. (1999), Modern Information Retrieval. Cambridge: Addison-Wesley.
2. Braam, R. R., Moed, H. F., Van Raan, A. F. J. (1991), Mapping of science by combined cocitation and word analysis. 2. Dynamic aspects. JASIS, 42: 252–266.
3. Batagelj, V., Mrvar, A. (2002), Pajek — Analysis and visualization of large networks. Graph Drawing, 2265: 477–478.
4. Ben-Hur, A., Elisseeff, A., Guyon, I. (2002), A stability based method for discovering structure in clustered data. In: Pacific Symposium on Biocomputing (vol. 7, pp. 6–17), Retrieved September 9, 2007 from: http://helix-web.stanford.edu/psb02/benhur.pdf .
5. Berry, M., Dumais, S. T., O’Brien, G. W. (1995), Using linear algebra for intelligent information retrieval. SIAM Review, 37(4): 573–595.