1. Behrman J, Sengupta P, Todd P (2000) The impact of PROGRESA on achievement test scores in the first year. International Food Policy Research Institute, Washington, DC
2. Bell SH, Bradley MC (2009) Potential for using experimentally-based impact estimates after the control group in an educational RCT receives the intervention. Draft report prepared for the Institute of Education Science. Abt Associates, Bethesda
3. Bell SH, Wood M et al (1993) Design of the Project NetWork evaluation. Abt Associates, Bethesda
4. Bloom HS (2005) Randomizing groups to evaluate place-based programs. In: Bloom HS (ed) Learning more from social experiments: evolving analytic approaches. Russell Sage Foundation, New York, pp 115–172
5. Boulay B, Moss M, Gamse B (2006) A study design for the national experimental evaluation of Facing History and Ourselves. Abt Associates, Cambridge