%0 Journal Article %A Ricci, Gabriele %T Boolean matrices ... neither Boolean nor matrices %J Discussiones Mathematicae. General Algebra and Applications %D 2000 %P 141-151 %V 20 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DMGAA_2000_20_1_a11/ %G en %F DMGAA_2000_20_1_a11