SÁNCHEZ AVILLANEDA, M. del R.; MARTÍNEZ BRAVO, R. Assessing the online reference service of the IIMAS-UNAM library with a time-series model . Ibersid: journal of information and documentation systems (ISSNe 2174-081X; ISSN 1888-0967), [S. l.], v. 3, p. 35–47, 2009. DOI: 10.54886/ibersid.v3i.3720. Disponível em: https://ojs.ibersid.eu/index.php/ibersid/article/view/3720. Acesso em: 19 may. 2024.