GUPTA, A. K., D. K. NAGAR, and VIPIN TAYAL. 1991. “NONNULL DISTRIBUTION OF LRC FOR TESTING HOMOGENEITY OF COVARIANCE MATRICES OF COMPLETELY SYMMETRIC GAUSSIAN MODELS”. Tamkang Journal of Mathematics 22 (1):13-24. https://doi.org/10.5556/j.tkjm.22.1991.4563.