“…Boyack, Small, & Klavans, 2013;Zhao & Strotmann, 2014;Bertin, Atanassova, Larivière, & Gingras, 2013;Bertin & Atanassova, 2014;Catalini, Lacetera & Oettl, 2015). Due to their extensive XML mark-up, the corpi from PLOS (e.g., Bertin, Atanssova, Gingras, & Lariviere, 2016), PubMed Central (Liu et al, 2014;Elkiss et al, 2008;Callahan, Hockema, & Eysenbach, 2010) and Elsevier (Boyack, Small, & Klavans, 2012), have been particularly useful for these analyses.…”