Foulonneau, M., E. Ras, E. Abou Zeid, and T. Atéchian. “Reusing Textual Resources in Educational Assessment: Adding Text Readability Metrics to Learning Metadata”. International Conference on Dublin Core and Metadata Applications, Sept. 2013, pp. 172-8, https://dcpapers-past.dublincore.org/pubs/article/view/3690.