1. M.J. Kurtz, J. Bollen: Usage bibliometrics, Annu. Rev. Inf. Sci. Technol. 44(1), 1–64 (2010)
2. S. Haustein: Readership metrics. In: Beyond Bibliometrics: Harnessing Multidimensional Indicators of Scholarly Impact, ed. by B. Cronin, C. Sugimoto (MIT Press, Cambridge 2014) pp. 327–344
3. M. Thelwall, K. Kousha: ResearchGate: Disseminating, communicating, and measuring Scholarship?, J. Assoc. Inf. Sci. Technol. 66(5), 876–889 (2015)
4. C. Tenopir, D.W. King, M.T. Clarke, K. Na, X. Zhou: Journal reading patterns and preferences of pediatricians, J. Med. Libr. Assoc. 95(1), 56–63 (2007)
5. F.A. McAlister, I. Graham, G.W. Karr, A. Laupacis: Evidence-based medicine and the practicing clinician, J. Gen. Int. Med. 14(4), 236–242 (1999)