Sinaga, Obsatar, et al. “The Dynamic Nexus of Digital Evolution, Environmental Turbulence and Environmental Performance: A Case of High-Tech Industries in the Emerging 4th Industrial Revolution”. International Journal of Energy Economics and Policy, vol. 9, no. 6, Oct. 2019, pp. 386-93, https://econjournals.com/index.php/ijeep/article/view/8363.