Scheines, Richard Spirtes, Peter Glymour, Clark Building Latent Variable Models Richard Scheines, Peter Spries and Clark Glymour. Building Latent Variable Models. Philosophy 1991-02-01
    https://kilthub.cmu.edu/articles/journal_contribution/Building_Latent_Variable_Models/6491030
10.1184/R1/6491030.v1