1. Coronavirus: Half of humanity now on lockdown as 90 countries call for confinement;Sandford,2020
2. The global economic outlook during the COVID-19 pandemic: A changed world,2020
3. Unraveling cultural value;Guersen;The Journal of Arts Management, Law, and Society,2003
4. Culture and society – 1780-1950;Williams,1958
5. A critical history of cultural indicators;Blomkamp,2015