1. Qualitative Reasoning about Physical Systems;Bobrow,1985
2. Nature Capacities and Their Measurements;Cartwright,1989
3. Some cautions concerning the application of causal modeling methods;Cliff;Multivariate behavioral research,1983
4. Theories of causal ordering;de Kleer;Artificial Intelligence,1986
5. Directional constraint networks: A relational framework for causal modeling;Dechter,1991