Gupta, Arjun K., and Daya K. Nagar. “Asymptotic Nonnull Distribution of the Likelihood Ratio Statistic for Testing Equality of Covariance Matrices under Intraclass Correlation Model”. Statistica 50, no. 4 (January 1, 1990): 585–594. Accessed April 3, 2025. https://rivista-statistica.unibo.it/article/view/853.