Haddaway NR, Collins AM, Coughlin D, Kirk S.The Role of Google Scholar in Evidence Reviews and Its Applicability to Grey Literature Searching.PLoS One. 2015 Sep 17;10(9):e0138237A very interesting article that touches upon GS in several contexts, including tracing its improvements over the years. The authors also discuss the debates about how GS works and then also about how  useful it is in finding grey literature for conducting evidence reviews. The article concludes that GS is indeed a useful supplement in searches for evidence, particularly grey literature so long as its limitations are recognised. The authors recommend that the assessment of results from Google…