%0 Journal Article %A Fernandes, Célia %A Ramos, Paulo %A Mexia, João %T Algebraic structure for the crossing of balanced and stair nested designs %J Discussiones Mathematicae. Probability and Statistics %D 2014 %P 71-88 %V 34 %N 1-2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DMPS_2014_34_1-2_a5/ %G en %F DMPS_2014_34_1-2_a5