1. R.L. Larsen, H.D. Wactlar, Knowledge Lost in Information, Report of the NSF Workshop on Research Directions for Digital Libraries, Chatham, MA, 2003.
2. P. Waddington, Dying for information? A report on the effects of information overload in the UK and worldwide, British Library Research and Innovation Report 78. , 1997 (accessed 04.11.05).
3. Product data management – exploratory study on state-of-the-art in one-of-a-kind industry;Hameri;Computers in Industry,1998
4. W.A. Woods, Conceptual Indexing: a better way to organize knowledge, Report No. SMLI TR-97-61, April 1997, Sun Microsystems Laboratories, Calif.
5. Within-document retrieval: a user-centred evaluation of relevance profiling;Harper;Information Retrieval,2004