Navratil, J., S. Ubik, and P. Pečiva. “Cloud Computing Alternative or the Future”. ENTRENOVA - ENTerprise REsearch InNOVAtion, vol. 4, no. 1, Oct. 2018, pp. 144-9, https://hrcak.srce.hr/ojs/index.php/entrenova/article/view/13860.