Tong, Yehui, and Zélia Serrasqueiro. “Bank Credit and Trade Credit under the COVID Crisis: A Comparison of the High-Technology and Low-Technology SMEs in Portugal”. Ekonomický časopis/Journal of Economics 73, no. 5-6 (September 30, 2025): 231–255. Accessed July 11, 2026. https://journals.savba.sk/index.php/ekonomickycasopis/article/view/2189.