Walker, Robert, Hoggart, Lesley and Hamilton, Gayle (2008) Observing the implementation of a social experiment. Evidence & Policy: A Journal of Research, Debate and Practice, 4 (3). pp. 183-203. ISSN 1744-2648 (Print), 1744-2656 (Online) (doi:https://doi.org/10.1332/174426408X355543)

Walker, Robert, Hoggart, Lesley and Hamilton, Gayle (2008) Random assignment and informed consent: A case study of multiple perspectives. American Journal of Evaluation, 29 (2). pp. 156-174. ISSN 1098-2140 (Print), 1557-0878 (Online) (doi:https://doi.org/10.1177/1098214008317206)