Useful publications in this area include:
The nature, scale and beneficiaries of research impact (REF 2014)
Research impact: a narrative review
A 'DECISIVE' approach to research funding
Making an impact: A preferred framework and indicators to measure returns on investment in health research
The ‘Payback Framework’ explained
100 Metrics to Assess and Communicate the Value of Biomedical Research
Building health research systems: WHO is generating global perspectives, and who’s celebrating national successes?