Lázaro-Rodríguez P. The omission of spending on Ex Libris, Web of Science, and Scopus in debates and research on alternatives based on free software and open tools. ThinKEPI [Internet]. 2026 Jun. 13 [cited 2026 Jun. 13];20. Available from: https://thinkepi.scimagoepi.com/index.php/ThinkEPI/article/view/91724