AUTHOR=Chen Chaomei TITLE=Grand Challenges in Measuring and Characterizing Scholarly Impact JOURNAL=Frontiers in Research Metrics and Analytics VOLUME=1 YEAR=2016 URL=https://www.frontiersin.org/journals/research-metrics-and-analytics/articles/10.3389/frma.2016.00004 DOI=10.3389/frma.2016.00004 ISSN=2504-0537