Directed Cyclic Graphs, Conditional Independence, and Non-Recursive Linear Constructive Equation Models Peter Spirtes 10.1184/R1/6491387.v1 https://kilthub.cmu.edu/articles/journal_contribution/Directed_Cyclic_Graphs_Conditional_Independence_and_Non-Recursive_Linear_Constructive_Equation_Models/6491387 Peter Spirtes. Directed Cyclic Graphs, Conditional Independence, and Non-Recursive Linear Constructive Equation Models. 1993-04-01 00:00:00 Philosophy