Durlak, J. A. & DuPre, E. P. Implementation matters: a review of research on the influence of implementation on program outcomes and the factors affecting implementation. Am. J. Community Psychol.41, 327–350 (2008).
Saunders, R. P., Evans, M. H. & Joshi, P. Developing a process-evaluation plan for assessing health promotion program implementation: a how-to guide. Health Promot. Pract.6, 134–147 (2005).