“…One of the main webometric techniques is impact analysis: using web-based methods to estimate the online impact of documents (Kousha & Thelwall, 2007b;Kousha, Thelwall, & Rezaie, 2010;Vaughan & Shaw, 2005), journals (Smith, 1999;Vaughan & Shaw, 2003), digital repositories (Zuccala, Thelwall, Oppenheim, & Dhiensa, 2007), researchers (Barjak, Li, & Thelwall, 2007;Cronin & Shaw, 2002), research groups (Barjak & Thelwall, 2008), departments (Chen, Newman, Newman, & Rada, 1998;Li, Thelwall, Wilkinson, & Musgrove, 2005b), universities (Aguillo, 2009;Aguillo, Granadino, Ortega, & Prieto, 2006;Qiu, Chen, & Wang, 2004;Smith, 1999), and even countries (Ingwersen, 1998;Thelwall & Zuccala, 2008).…”