VAŠANIČOVÁ, Petra - GIRA, Dominik. Relationship between Indexes of GCI and EFI in the Case of EU-27 Countries. In Journal of management and business : research and practice. - Prešov : Fakulta manažmentu Prešovskej univerzity, 2018. ISSN 1338-0494, 2018, vol. 10, no. 1, s. 5-11.