MARKOVÁ, Stela - HEČKOVÁ, Jaroslava - CHAPČÁKOVÁ, Alexandra. Analysis of the pillars of the knowledge economy in the countries of the Visegrad four. In Journal of management and business : research and practice. - Prešov : Fakulta manažmentu Prešovskej univerzity, 2016. ISSN 1338-0494, 2016, vol. 8, no. 1, s. 5-14.