Poór, József; Józsa, Imola (25 March 2015). "IEECA Journal". Journal of Eastern European and Central Asian Research (Jeecar). 2 (1). doi:10.15549/jeecar.v2i1.70. Retrieved 24 August 2016.
Poór, József; Józsa, Imola (25 March 2015). "IEECA Journal". Journal of Eastern European and Central Asian Research (Jeecar). 2 (1). doi:10.15549/jeecar.v2i1.70. Retrieved 24 August 2016.