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The interpretation of multiple observations
Marriott, Francis H. C., (1974)
Multivariate statistical methods
Morrison, Donald Franklin, (1967)
An introduction to multivariate statistical analysis
Anderson, Theodore W., (1958)
The statistical approach
Kendall, Maurice G., (1950)
Rank correlation methods
Kendall, Maurice G., (1955)
Kendall, Maurice G., (1948)