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Compact matrix expressions for generalized Wald tests of equality of moment vectors
Satorra, Albert, (1995)
The algebraic equality of two asymptotic tests for the hypothesis that a normal distribution has a specified correlation matrix
Neudecker, Heinz, (1995)
Compact Matrix Expressions for Generalized Wald Tests of Equality of Moment Vectors, ,
Satorra, Albert, (1997)