1. Cooper H, Hedges L: The Handbook of Research Synthesis. 1994, Russell Sage Foundation, New York
2. Gough D: Dimensions of difference in evidence reviews (Overview; I. Questions, evidence and methods; II.Breadth and depth; III. Methodological approaches; IV. Quality and relevance appraisal; V. Communication, interpretation and application. Series of six posters presented at National Centre for Research Methods meeting, Manchester. January 2007, EPPI-Centre, London,
http://eppi.ioe.ac.uk/cms/Default.aspx?tabid=1919
,
3. Gough D, Thomas J: Commonality and diversity in reviews. Introduction to Systematic Reviews. Edited by: Gough D, Oliver S, Thomas J. 2012, Sage, London, 35-65.
4. Chalmers I, Hedges L, Cooper H: A brief history of research synthesis. Eval Health Professions. 2002, 25: 12-37. 10.1177/0163278702025001003.
5. Bohlin I: Formalising syntheses of medical knowledge: the rise of meta-analysis and systematic reviews. Perspect Sci. in press, in press