%0 Journal Article %A J.C. Koop %T On the Derivation of Expected Value and Variance of Ratios without the Use of Infinite Series Expansions. %J Metrika %D 1972 %P 156-170 %V 19 %I mathdoc %U http://geodesic.mathdoc.fr/item/MET_1972__19_175544/ %F MET_1972__19_175544