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@article{MET_1967__12_175342, author = {M.T. Subrahmanya}, title = {On the {Positivity} of a {Variance-Estimator} .}, journal = {Metrika}, pages = {43--47}, publisher = {mathdoc}, volume = {12}, year = {1967}, zbl = {0149.14808}, url = {http://geodesic.mathdoc.fr/item/MET_1967__12_175342/} }
M.T. Subrahmanya. On the Positivity of a Variance-Estimator .. Metrika, Tome 12 (1967), pp. 43-47. http://geodesic.mathdoc.fr/item/MET_1967__12_175342/