Strain softening and hardening of amorphous polymers: Atomistic simulation of bulk mechanics and local dynamicsA. V. Lyulin, B. Vorselaars, M. A. Mazo, N. K. Balabaev and M. A. J. MichelsEurophys. Lett., 71 4 (2005) 618-624DOI: https://doi.org/10.1209/epl/i2005-10133-0