Bradu, D., and Hawkins, D.M. (1982) Location of Outliers in Two-Way Tables Using Tetrads. Technometrics, 24: 103-108.
Caroni, C. (1998) Wilks' outlier test in more than one multivariate sample. Communications in Statistics - Simulation and Computation, 27: 79-94.
Caroni, C., and Prescott, P. (1992) Sequential application of Wilks' multivariate outlier test. Applied Statistics, 41: 355-364.
Matsumoto, M., and Nishimura, T. (1998) Mersenne Twister: A 623-Dimensionally Equidistributed Uniform Pseudorandom Number Generator. ACM Transactions on Modeling and Computer Simulation, 8: 3-30.
Rosner, B. (1983) Percentage points for a generalized ESD many-outlier procedure. Technometrics, 25: 165-172.
Wilks, S.S. (1963) Multivariate statistical outliers. Sankhya A, 25: 407-426.