TY - JOUR AU - Hervé Oyono-Oyono TI - Groupoids decomposition, propagation and operator $K$-theory JO - Groups, geometry, and dynamics PY - 2023 SP - 751 EP - 804 VL - 17 IS - 3 UR - http://geodesic.mathdoc.fr/articles/10.4171/ggd/715/ DO - 10.4171/ggd/715 ID - 10_4171_ggd_715 ER -