LUKÁČOVÁ, Anna. Development of Economical Cooperation of Slovakia and Ukraine as a Factor of Competitiveness Increasing. In Naukovij visnik Užgorods`kogo universitetu : serija ekonomika. - Užgorod : Užgorods`kij nacionaľnij universitet, 2007. ISSN 0869-0782, 2007, no. 22, s. 67-72. VEGA 1/3829/06.