Radziszewski, Piotr, Joanicjusz Nazarko, Jan Król, Karol Kowalski, and Michał Sarnowski. 2014. “Forecasting Development of Road Technology Based on the Delphi Method – Selected Issues”. Budownictwo I Architektura 13 (4):215-24. https://doi.org/10.35784/bud-arch.1819.