Miled, B., Doghri, I., & Delannay, L. (2011). Coupled viscoelastic–viscoplastic modeling of homogeneous and isotropic polymers: Numerical algorithm and analytical solutions. Computer Methods in Applied Mechanics and Engineering, 200(47-48), 3381-3394. https://doi.org/10.1016/j.cma.2011.08.015 (Original work published 2011)