Byambajav, E.-A., and U. Artskhuu. “DETERMINING THE COMPETITIVENESS OF ECONOMIC SECTORS USING AN INDEX METHOD BASED ON PRINCIPAL COMPONENT ANALYSIS”. Journal of Business and Innovation (Бизнес & Инноваци), vol. 12, no. 1, May 2026, pp. 30-47, doi:10.22353/jbai.2026120103.