Learning Qualitative Models of Dynamic Systems. - Ivan Bratko; Stephen H. Muggleton; Alen Varsek (ML, 1991)

Qualitative Model Evolution. - Alen Varsek (IJCAI, 1991)

Genetic algorithms in controller design and tuning. - Alen Varsek; Tanja Urbancic; Bogdan Filipic (IEEE Trans. Syst. Man Cybern., 1993)