TY  - JOUR
AU  - Yulan Qing
AU  - Kasra Rafi
TI  - Convexity of balls in outer space
JO  - Groups, geometry, and dynamics
PY  - 2021
SP  - 893
EP  - 934
VL  - 15
IS  - 3
UR  - http://geodesic.mathdoc.fr/articles/10.4171/ggd/615/
DO  - 10.4171/ggd/615
ID  - 10_4171_ggd_615
ER  -