1.
Kaster Sarkytkan AB, Dimitrova Sabeva P. Studying the Kazakhstan and Bulgaria global competitiveness by WEF, IMD, WB indicators. Opción [Internet]. 2019Dec.31 [cited 2025Dec.21];350:1417-32. Available from: https://produccioncientificaluz.org/index.php/opcion/article/view/30752