TY - JOUR AU - Jiayin Pan TI - The Fundamental Groups of Open Manifolds with Nonnegative Ricci Curvature JO - Symmetry, integrability and geometry: methods and applications PY - 2020 VL - 16 UR - http://geodesic.mathdoc.fr/item/SIGMA_2020_16_a77/ LA - en ID - SIGMA_2020_16_a77 ER -