Haslett, Stephen. "Positive semidefiniteness of estimated
covariance matrices in linear models for
sample survey data"
Special Matrices, vol. 4, no. 1, 2016.
https://doi.org/10.1515/spma-2016-0020
Haslett, S. (2016) Positive semidefiniteness of estimated
covariance matrices in linear models for
sample survey data. Special Matrices, Vol. 4 (Issue 1).
https://doi.org/10.1515/spma-2016-0020
Haslett, Stephen. "Positive semidefiniteness of estimated
covariance matrices in linear models for
sample survey data"
Special Matrices 4, no. 1 (2016).
https://doi.org/10.1515/spma-2016-0020