WANG, L. W. .; TRAN, T. T. . Vietnamese Milk Industry Forecasting: A Grey System Theory Case of Vinamilk. International Journal of Asian Social Science, [S. l.], v. 4, n. 6, p. 779–790, 2014. Disponível em: https://archive.aessweb.com/index.php/5007/article/view/2677. Acesso em: 3 jul. 2024.