%0 Journal Article %A E. Sonnemann %T U-Optimum Row-Columns Designs for the Comparison of Two Treatments. %J Metrika %D 1985 %P 57-63 %V 32 %I mathdoc %U http://geodesic.mathdoc.fr/item/MET_1985__32_175987/ %F MET_1985__32_175987