1. Agosti, M.; Marchetti, P. G., 1992: User navigation in the IRS conceptual structure through a semantic association function. In: The Computer Journal 35 (3), p. 194–200
2. Albrechtsen, H., 1990: Software concepts: knowledge organisation and the human interface. In: R. Fugmann (ed.), Advances in Knowledge Organisation. Vol. 1, p. 48–53
3. Artandi, S., 1973: Information concepts and their utility. In: JASIS, 24, p. 242245
4. Bates, M. J., 1989: The design of browsing and berry picking techniques for the online search interface. In• Online Review 13 (5), p. 407–424
5. Bateson, G., 1980: Mind and Nature: A Necessary Unit. New York: Bantam Books