1. OECD Glossary of statistical terms – research and development UNESCO definition. https://stats.oecd.org/glossary/detail.asp?ID=2312
2. Tripp S, Helwig R, Yetter D (2017) The importance of research universities with examples of their functional role and impacts within the state of Indiana. BioCrossroads, Indianapolis. https://www.buildingindiana.com/wp-content/uploads/2018/06/Indiana-Research-TEConomy-Report-final.pdf
3. Lee MS (2015) The age of quality innovation. Int J Qual Innov 1:1–9. https://doi.org/10.1186/s40887-015-0002-x
4. Rosenberg N, Landau R, Mowery D (1992) Technology and the wealth of nations. Stanford University Press, Stanford. ISBN: 9780804766586
5. Almansour S (2016) The crisis of research and global recognition in Arab Universities. Near Middle East J Res Educ 1:1–13. https://www.qscience.com/docserver/fulltext/nmejre/2016/1/nmejre.2016.1.pdf?expires=1613852113&id=id&accname=guest&checksum=BFE1B9B5C02FBA11715A0AB19A7BC4D6