SCHPERFEKHTER, E.; BORSHHEVSKYI, S. V. The development of methods and techniques of application, spraying concrete in a thin stream into the underground construction in Germany. Science and Transport Progress , [S. l.], n. 21, p. 211–215, 2008. DOI: 10.15802/stp2008/16511. Disponível em: https://stp.ust.edu.ua/article/view/16511. Acesso em: 4 may. 2024.