Nicholas, D., Herman, E., Abrizah, A., Rodríguez-Bravo, B., Boukacem-Zeghmouri, C. ., Watkinson, A., Świgoń , M. . ., Xu, J., Jamali , H. R. ., & Tenopir, C. (2023). Never mind predatory publishers… what about ‘grey’ publishers?. Profesional De La información, 32(5). https://doi.org/10.3145/epi.2023.sep.09