TY - GEN T1 - Google Scholar, Microsoft Academic, Scopus, Dimensions, Web of Science, and OpenCitations' COCI: a multidisciplinary comparison of coverage via citations T2 - arXiv PY - 2020/04/29 AU - Martín-Martín A AU - Thelwall M AU - Orduna-Malea E AU - López-Cózar ED ED - DO - DOI: 10.48550/arxiv.2004.14329 Y2 - 2024/12/28 ER -