VÁRADI, Sándor; KOVÁCS, László. PNEUMATIC CONVEYING IN THE VERTICAL PIPELINE OF AIR LIFT. Periodica Polytechnica Mechanical Engineering, [S. l.], v. 42, n. 2, p. 89–102, 1998. Disponível em: https://pp.bme.hu/me/article/view/5458. Acesso em: 17 may. 2024.