About the Authors

Brent D. Fegley

Affiliations Graduate School of Library and Information Science, University of Illinois at Urbana-Champaign, Champaign, Illinois, United States of America, Illinois Informatics Institute, University of Illinois at Urbana-Champaign, Urbana, Illinois, United States of America

Vetle I. Torvik

vtorvik@illinois.edu

Affiliation Graduate School of Library and Information Science, University of Illinois at Urbana-Champaign, Champaign, Illinois, United States of America

Competing Interests

Vetle Torvik is a co-inventor of the Author-ity dataset, which is subject to licensing to third-parties (for non-academic or for-profit use) by the University of Illinois, which owns this intellectual property. However, the Author-ity dataset is provided free-of-charge for non-profit academic research. This does not alter the authors' adherence to all the PLOS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: VIT. Performed the experiments: BDF. Analyzed the data: BDF VIT. Contributed reagents/materials/analysis tools: VIT. Wrote the paper: BDF VIT.