A. Alkahtani, Y.M., Abdussalam Ashour, K. and Zsarnóczai, J.S. 2016. Factor analyses for economic growth in EU-28 and MENA-4 countries. Review on Agriculture and Rural Development. 5, 1-2 (Jan. 2016), 171–176. DOI:https://doi.org/10.14232/rard.2016.1-2.171-176.