Ukraine and Slovakia in a post-crisis architecture of European energy security = Ukrajina i Slovaččina v postkrizovij architekturi jenergetičnoji bezpeky Jevropy : prospects for transport of fydrocarbons and bilateral cooperation - Gonchar, Mykhailo; Duleba, Alexander 1966-; Malynovskyi, Oleksandr (Research Center of the Slovak Foreign Policy Association, 2011)