%0 Journal Article %A Sumanda Bagchi %T Optimality and Construction of Some Rectangular Desgins. %J Metrika %D 1994 %P 29-41 %V 41 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/MET_1994__41_5_176492/ %F MET_1994__41_5_176492