Adam, N.; Yewsha, Y. e.a. Strategic directions in electronic commerce and digital libraries: towards a digital agora. In: ACM computing surveys, 28(1996)4, p. 818-835. Alexander, A.; Goodyear, M. - Chainging the role of research libraries in scholarly communication. - In: Journal of electronic publishing, 5(2000)3, [http://www.press.umich.edu/jep/05-03/alexander.html]. Arms, W.Y. - Digital libraries. - Cambridge, MA: MIT Press, 1999. - ISBN 0-262-01180-8. Brophy, P. - Digital library research overview: final report / Peter Brophy, Centre for Research in Library and Information Management, Department of Information & Communications, Manchester Metropolitan University, August 1999. - [www.lic.gov.uk/research/digital/review.rtf]. Buck, A.M.; Flagan, R.C.; Coles, B. - Scholars forum: a new model for scholarly communication, 1999. - [http://library.caltech.edu/publications/scholarsforum/]. Chen, H. (ed.) - Digital libraries. Special topic issues of the Journal of the American Society for Information science, 51(2000)3/4. Chien, Y.T. - Digital libraries, knowledge networks, and human-centered information systems. - In: Proceedings of the International Symposium on Research, Development and Practice in Digital Libraries. ISDL'97, Tsukuba, Ibaraki, Japan, November 18-21, 1997. - [http://www.dl.ulis.ac.jp/ISDL97/proceedings/ytchien/ytchien.html]. Duff, A.S. - Some post-war models of the information chain. - In: Journal of librarianship and information science, 29(1997)4, p. 179-187. Ginsparg, P.; Luce, R.; Sompel, H. van de - The UPS initiative aimed at the further promotion of author self-archived solutions. - Los Alamos National Laboratory, July 1999. - [http://www.openarchives.org/ups-invitation-ori.htm]. Harnad, S. - Learned enquiry and the net: the role of peer review, peer commentary and copyright. - 1999. - [http://interarch.york.ac.uk/intarch/antiquity/electronics/harnad.html]. Kling, R. and G. McGim - Scholarly communication and the continuum of electronic publishing. - In: Journal of the American Society for Information science, 50(1999)10, p. 890-906. Meadows, A.J. (ed.) Knowledge and communication: essays on the information chain. London: Library Association Publishing. [NSF 2000] National Science Foundation - National Science, Mathematics, Engineering and Technology Education Digital Library - Program solicitation (NSF 00-44). - Arlington, January 2000. - [http://www.nsf.gov/cgi-bin/getpub?nsf0044]. [Phelps 1998] Phelps, Th.A. - Multivalent documents: anytime, anywhere, any type, every way user-improvable digital documents and systems (Ph.D. dissertation, 1998). - [www.cs.berkeley.edu/~phelps/papers/dissertation- abstract.html]. [Rowland 1997] Rowland, F. - Print journals: fit for the Future? - In: Ariadne, issue 7, January 1997. - [www.ukoln.ac.uk/ariadne/issue7/fytton/]. [Schulenberger 1998] Scholarly communication and the need for collective action: a statement by the Chief Academic Officers of the Big 12. - [http://www.big12plus.org/pressreleases/scholar.html].