Microsoft recommended a range of alternatives in their closure announcement. Anyone know much about any of these?<p>- Aminer<p>- CrossRef<p>- Dimensions<p>- lens.org<p>- OpenAlex.org<p>- OpenCitations<p>- Scopus<p>- Semantic Scholar<p>Ref includes links half way down: <a href="https://www.microsoft.com/en-us/research/project/academic/articles/microsoft-academic-to-expand-horizons-with-community-driven-approach/" rel="nofollow">https://www.microsoft.com/en-us/research/project/academic/ar...</a>