Silva, Joaquim Ramos, Mário Franco, and André Magrinho. “Empirical Investigation of the Effects of Industry Type and Firm Size on Export Barriers”. Journal of Business Economics and Management 17, no. 6 (December 21, 2016): 1052-1065. Accessed January 26, 2022. https://journals.vgtu.lt/index.php/JBEM/article/view/2291.