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Primary text: users.stat.umn.edu/~helwig/notes/generalized-linear-models.html

Cited passages: Section 1, Deviance and Estimating phi: unscaled deviance, dispersion normalization and residual-degree moment estimates. Instructor-authored University of Minnesota notes; their opening attribution identifies the summarized portions of Simon N. Wood, Generalized Additive Models, second edition, chapter 3.