Introducing meta-levels to qualitative reasoning, B.Bredeweg; interval-based envisioning in HIQUAL, H.Voss and M.Linster; creating and using causal models, R.J.Doyle; toward a natural language-based causal model acquisition system, M.Selfridge; diagnosis with a function-fault model, L.Steele; systematic knowledge base design for medical diagnosis, O.Stenyk et al.
