1. Changing European gas map - an opportunity or threat for Slovakia?
:BADIDA, Jozef. Changing European gas map - an opportunity or threat for Slovakia? In International issues & Slovak foreign policy affairs. - Bratislava : Research Centre of the Slovak Foreign Policy Association, 2014. ISSN 1337-5482, 2014, vol. 23, č. 3-4, p. 3-11.