ZÁDOR, István László. Concept of a Cost-effective Underground Air-propelled Tube-capsule Transport System. Periodica Polytechnica Transportation Engineering, [S. l.], v. 50, n. 4, p. 357–360, 2022. 10.3311/PPtr.15423. Disponível em: https://pp.bme.hu/tr/article/view/15423. Acesso em: 30 apr. 2024.