Matonytė, Irmina, and Vaidas Morkevičius. “External Threats to the Cohesion of the EU: A Comparative Study of Elites’ Perceptions”. Sociologija. Mintis Ir Veiksmas, vol. 24, July 2009, pp. 63-80, https://doi.org/10.15388/SocMintVei.2009.1.6077.