[1] I. Kramosil: A note on nonaxiomatizability of independence relations generated by certain probabilistic structure. Kybernetika 24 (1988), 6, 439-446. MR 0975853

[2] F. Matúš: Independence and Radon projections on compact groups. Ph. D. Thesis, Prague 1988. To appear. In Czech.

[3] J. Pearl: Markov and Bayes Networks: a Comparison of Two Graphical Representations of Probabilistic Knowledge. Technical Report CSD 860024, R-46-1, University of California, Los Angeles 1986.

[4] A. Perez, R. Jiroušek: Constructing an intensional expert system INES. In: Medical Decision-making: Diagnostic Strategies and Expert Systems (J. V. van Bemmel, F. Gremy and J. Zvárová, eds.), North-Holland, Amsterdam 1985, pp. 307-315.

[5] M. Studený: Multiinformation and the problem of characterization of conditional-independence relations. Problems Control Inform. Theory 18 (1989), 1, 3-16. MR 0986211