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Exact and Approximate Distributions of the Maximum Likelihood Estimator of a Slope Coefficient: The LIML Estimator for a Known Covariance Matrix.
Anderson, T. W., (1980)
Estimation of Dynamic Models with Error Components.
"On Likelihood Ratio Tests of Structural Coefficients: Anderson-Rubin (1949) revisited"
Kunitomo, Naoto, (2007)