R. ROHINI; K. KRISHNAN. Analysis of Two-Echelon Inventory System With Two Demand Classes With Direct Demand. International Journal of Mathematics And its Applications, [S. l.], v. 6, n. 3, p. 261–271, 2018. Disponível em: http://ijmaa.in/index.php/ijmaa/article/view/379. Acesso em: 8 may. 2024.