@article{GDZPPN00245226X,
title = {On Classes of Estimators of the Variance Function of a Linear Estimator.},
journal = {Metrika},
volume = {19},
year = {1972},
pages = {15-20},
zbl = {0226.62070},
url = {http://dml.mathdoc.fr/item/GDZPPN00245226X}
}
Prabhu Ajgaonkar, S.G. On Classes of Estimators of the Variance Function of a Linear Estimator.. Metrika, Tome 19 (1972) pp. 15-20. http://gdmltest.u-ga.fr/item/GDZPPN00245226X/