Mancheva-Ali, Olga, and Ilyan Lilov. “Opportunities to Achieve a Sustainable Restaurant Business”. ENTRENOVA - ENTerprise REsearch InNOVAtion 4, no. 1 (October 31, 2018): 321–329. Accessed June 2, 2024. https://hrcak.srce.hr/ojs/index.php/entrenova/article/view/13913.