%0 Journal Article %A Moore, Justin Tatch %T Nonexistence of Idempotent Means on Free Binary Systems %J Canadian mathematical bulletin %D 2019 %P 577-581 %V 62 %N 3 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-2018-038-5/ %R 10.4153/CMB-2018-038-5 %F 10_4153_CMB_2018_038_5