CHEN, Xiangying. Cost-Optimal Safety-Stock Levels for U.S. SME Importers under Tariff-Rate Volatility: A Distributionally Robust Optimization Approach. Economics and Management Innovation, [S. l.], v. 2, n. 5, p. 72–78, 2025. DOI: 10.71222/8633zv52. Disponível em: http://www.gbspress.com/index.php/EMI/article/view/451. Acesso em: 13 oct. 2025.