Likelihood ratio tests for mean vectors and covariance matrices

On the asymptotic joint distributions of certain functions of the eigenvalues of four random matrices

Krishnaiah, P. R., (1979)

Approximations to the distributions of the likelihood ratio statistics for testing certain structures on the covariance matrices of real multivariate normal populations

Lee, Jack C., (1977)

Inference on the eingenvalues of the covariance matrices of real and complex multivariate normal populations

Krishnaiah, P. R., (1977)