Preprint. The cost of Open Access: Comparing public projects’ budgets and Article Processing Charges expenditureAlonso-Álvarez, Patricia; Sastrón-Toledo, Pablo; Mañana-Rodríguez, Jorge2024-02-27https://alonsoalvarezp.com/publications_blog/open_access_preprint/ Patricia Alonso-Álvarezarticle processing chargesopen accessopen sciencespanish plan of r&d