@article{Annitto2020, author = "Jill Annitto", title = "{NP2020_NISO Z39.4 Criteria for Indexes}", year = "2020", month = "4", url = "https://nisoplus.figshare.com/articles/presentation/NP2020_NISO_Z39_4_Criteria_for_Indexes/12071718", doi = "10.6084/m9.figshare.12071718.v1" }