Altenbach, H., et al. “Modelling of the Creep-Damage under the Reversed Stress States by Considering Damage Activation and Deactivation”. Technische Mechanik - European Journal of Engineering Mechanics, vol. 21, no. 4, Sept. 2019, pp. 273-82, https://journals.ub.ovgu.de/index.php/techmech/article/view/1059.