Soto-Rodríguez, Edgar, and Edgar Maiz-Vázquez. “Implications of Including Non-Executives’ Perception in the Executive Opinion Survey: A Hierarchical Bias Effect in the Global Competitive Index”. Journal of Marketing Development and Competitiveness 10, no. 2 (September 1, 2016). Accessed January 18, 2025. https://mail.articlegateway.com/index.php/JMDC/article/view/1849.