TY - JOUR AU - Norbert A'Campo TI - Flow box decomposition for gradients of univariate polynomials, billiards on the Riemann sphere, tree-like configurations of vanishing cycles for $A_n$ curve singularities and geometric cluster monodromy JO - EMS surveys in mathematical sciences PY - 2022 SP - 389 EP - 414 VL - 9 IS - 2 UR - http://geodesic.mathdoc.fr/articles/10.4171/emss/62/ DO - 10.4171/emss/62 ID - 10_4171_emss_62 ER -