1. Cochrane Handbook for Systematic Reviews of Interventions;Higgins,2021
2. Technology Readiness Levels (TRL),2014
3. Societal Readiness Levels (SRL) defined according to Innovation Fund Denmarkhttps://ec.europa.eu/isa2/sites/isa/files/technology_readiness_revisited_-_icegov2020.pdf
4. Digital Twins for the Built Environment: An Introduction to the Opportunities, Benefits, Challenges and Riskshttps://www.theiet.org/impact-society/sectors/built-environment/built-environment-news/digital-twins-for-the-built-environment/