14. COX, D.R., 'The analysis of multivariate binary data', Applied Statistics, 21, 113-120 (1972).

15. BOX, G.E.P. and TIAO, G.C., Bayesian Inference in Statistical Analysis, 304-315, Addison-Wesley, Reading, Mass. (1973).

16. GOOD, I.J., The Estimation of Probabilities: An Essay on Modern Bayesian Methods, The M.I.T. Press, Cambridge, Mass. (1965).

17. HARPER, D. and van RIJSBERGEN, C.J., 'An evaluation of feedback in document retrieval using co-occurrence data', Journal of Documentation, 34, 189-216 (1978).

18. HUGHES, G.F., 'On the mean accuracy of statistical pattern recognizers', IEEE Transactions on Information Theory, IT-14, 55-63 (1968).

19. MARON, M.E. and KUHNS, J.L., 'On relevance, probabilistic indexing and information retrieval', Journal of the ACM, 7, 216-244 (1960).

20. IVIE, E.L., 'Search Procedures Based on Measures of Relatedness Between Documents', Ph.D. Thesis, M.I.T., Report MAC-TR-29 (1966).

21. WHITNEY, V.K.M., 'Minimal spanning tree, Algorithm 422', Communications of the ACM, 15, 273-274 (1972).

22. BENTLEY, J.L. and FRIEDMAN, J.H., Fast Algorithm for Constructing Minimal Spanning Trees in Coordinate Spaces, Stanford Report, STAN-CS-75-529 (1975).

23. CROFT, W.B., 'Clustering large files of documents using single link', Journal of the American Society for Information Science, 28, 341-344 (1977).

24. SALTON, G., Dynamic Information and Library Processing, Prentice-Hall, Englewoods Cliffs, NJ., 441-445 (1975).

25. JARDINE, N. and SIBSON, R., Mathematical Taxonomy, pp. 12-15, Wiley, London and New York (1971).

26. KENDALL, M.G. and STUART, A., Advanced Theory of Statistics, Vol. 2, 2nd ed., Griffin, London (1967).

27. LINFOOT, E.H., 'An informational measure of correlation', Information and Control, 1, 85-89 (1957).

28. YU, C.T. and SALTON, G., "Precision Weighting - An effective automatic indexing method', Journal of the ACM, 23, 76-85 (1976).

29. YU, C.T., LUK, W.S. and CHEUNG, T.Y., 'A statistical model for relevance feedback in information retrieval', Journal of the ACM, 23, 273-286 (1976).

30. NEGOITA, C.V., 'On the decision process in information retrieval', Studii si cercetari de documentare, 15, 269-281 (1973).

31. ROBERTSON, S.E., 'Theories and models in information retrieval', Journal of Documentation, 33, 126-148 (1977).

32. DOYLE, L.B., Information Retrieval and Processing, Melville Publishing Co., Los Angeles, California (1975).

33. DOYLE, L.B., 'Programmed interpretation of text as a basis for information retrieval systems', In: Proceedings of the Western Joint Computer Conference, San Francisco, 60-63 (1959).

34. DOYLE, L.B., 'Semantic road maps for literature searchers', Journal of the ACM, 8, 553-578 (1961).

35. DOYLE, L.B., 'Some compromises between word grouping and document grouping', In: Statistical Association Methods for Mechanized Documentation (Edited by Stevens et al.) National Bureau of Standards, Washington, 15-24 (1965).

36. STILES, H.F., 'The association factor in information retrieval', Journal of the ACM, 8, 271-279 (1961).

37. GOODMAN, L. and KRUSKAL, W., 'Measuresof association for cross-classifications', Journal of the AmericanStatistical Association, 49, 732-764 (1954).