Roblek, V., M. Meško, and Z. Meško Štok. “Digital Sustainability in the Fourth Industrial Revolution”. ENTRENOVA - ENTerprise REsearch InNOVAtion, vol. 2, no. 1, Oct. 2016, pp. 357-61, https://hrcak.srce.hr/ojs/index.php/entrenova/article/view/14236.