N. Arroyo Vázquez, M. L. Alvite Díez, B. Rodríguez Bravo, and L. de Cos González Taladriz, “The availability in electronic format of books included in syllabi at university libraries. The Online Degree in Library and Information Science of the University of León”, Rev. gen. inf. doc., vol. 33, no. 1, pp. 257–279, Jun. 2023, doi: 10.5209/rgid.83925.