KOVÁCS, L.; VÁRADI, S. THE MATHEMATICAL MODEL OF PLUG FLOW CONVEYING Periodica Polytechnica Mechanical Engineering, [S. l.], v. 37, n. 1, p. 45–66, 1993. Disponível em: https://pp.bme.hu/me/article/view/5536. Acesso em: 6 apr. 2025.