References
- Graybill , F. A. 1969 . Introduction to Matrices With Applications in Statistics , Belmont , Calif. : Wads worth Publishing Co. .
- John , P. W. M. 1971 . Statistical Design and Analysis of Experiments , New York : The Macmillan Co. .
- Searle , S. R. 1971 . Linear Models , New York : John Wiley & Sons .