%0 Journal Article %A Zelin Yi %A Nigel Higson %T Spinors and the Tangent Groupoid %J Documenta mathematica %D 2019 %P 1677-1720 %V 24 %U http://geodesic.mathdoc.fr/articles/10.4171/dm/712/ %R 10.4171/dm/712 %F 10_4171_dm_712