1. Abrizah, A., & Thelwall, M. (2014). Can the impact of non-Western academic books be measured? An investigation of Google Books and Google Scholar for Malaysia. Journal of the Association for Information Science and Technology, 65(12), 2498–2508. doi:10.1002/asi.23145.
2. Aleixandre-Benavent, R., Valderrama Zurián, J. C., Alonso-Arroyo, A., Miguel-Dasit, A., González de Dios, J., & de Granda Orive, J. (2007). Spanish versus English as a language of publication and impact factor of Neurologia. Neurología (Barcelona, Spain), 22(1), 19–26. Retrieved from http://europepmc.org/abstract/MED/17315099/reload=0.
3. Archambault, É., Caruso, J., & Nicol, A. (2014). State-of-art analysis of OA strategies to peer-review publications (Vol. 1). Retrieved from http://science-metrix.com/files/science-metrix/publications/d_2.1_sm_ec_dg-rtd_oa_policies_in_the_era_update_v05p.pdf.
4. Archambault, É., Côté, G., Struck, B., & Voorons, M. (2016). Research impact of paywalled versus open access papers. Retrieved from http://www.1science.com/oanumbr.html.
5. Bornmann, L. (2014). Alternative metrics in scientometrics: A meta-analysis of research into three altmetrics. Digital Libraries; Physics and Society, 103(3), 1123–1144. doi:10.1007/s11192-015-1565-y.