MURA, Ladislav - DAŇOVÁ, Monika - VAVREK, Roman - DUBRAVSKÁ, Mariana. Economic Freedom – Classification of its Level and Impact on the Economic Security. In AD ALTA : journal of interdisciplinary research. - Hradec Králové : MAGNANIMITAS, 2017. ISSN 2464-6733, 2017, vol. 7, no. 2, pp. 154-157.