Ćurlin, T., V. Šimićević, and B. Jaković. “Current State and Perspectives of Twitter Usage in Tourism”. ENTRENOVA - ENTerprise REsearch InNOVAtion, vol. 4, no. 1, Oct. 2018, pp. 347-55, https://hrcak.srce.hr/ojs/index.php/entrenova/article/view/13936.