%0 Journal Article %A Margolis, Stuart %A Rhodes, John %A Silva, Pedro V. %T On the Wilson monoid of a pairwise balanced design %J Algebraic Combinatorics %D 2020 %P 637-665 %V 3 %N 3 %I MathOA foundation %U https://alco.centre-mersenne.org/articles/10.5802/alco.106/ %R 10.5802/alco.106 %G en %F ALCO_2020__3_3_637_0