%0 Journal Article %A Announcement ​ %T Non-commutative structures 2018: a workshop in honor of Jonathan Leech %J Ars Mathematica Contemporanea %D 2018 %V 14 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/AMC_2018__14_1_a17/ %G en %F AMC_2018__14_1_a17