%0 Journal Article %A S.G. Prabhu-Ajgaonkar %T A Note on Necessary Best Estimator of Order Two . %J Metrika %D 1984 %P 1-4 %V 31 %I mathdoc %U http://geodesic.mathdoc.fr/item/MET_1984__31_175922/ %F MET_1984__31_175922