Okoń-Horodyńska, Ewa. “The Lisbon Strategy-Principles and Changes of Realisation in the European Union (part I)”. Nauka I Szkolnictwo Wyższe, no. 2(22), Feb. 2016, pp. 13-28, https://pressto.amu.edu.pl/index.php/nsw/article/view/4708.