LUO, Xinyu. Express Delivery Quantity Prediction Based On The Grey GM(1,1) Model. Strategic Management Insights, Kington, U.K., v. 2, n. 1, p. 115–125, 2025. DOI: 10.70088/hkj4c582. Disponível em: https://soapubs.com/index.php/SMI/article/view/920.. Acesso em: 6 dec. 2025.