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THREE RANK FORMULAS ASSOCIATED WITH THE COVARIANCE MATRICES OF THE BLUE AND THE OLSE IN THE GENERAL LINEAR MODEL
Puntanen, Simo, (2005)
Orthogonal Projectors—Solution
Puntanen, Simo, (1997)
The Moore-Penrose Generalized Inverse of a Symmetric Matrix
Puntanen, Simo, (1996)