J. A. Ortiz-Zambrano and A. Montejo-Raéz, “Barriers in Reading Comprehension of University Students: Analysis of the Complicated Words Annotated in the VYTEDU-CW Corpus”, Int. J. Adv. Sci. Eng. Inf. Technol., vol. 10, no. 5, pp. 1798–1805, Sep. 2020.