14th 14th International scientific conference on sustainable, modern and safe transport - TRANSCOM 2021 : May 26-28, 2021, virtuálny priestor [elektronický zdroj] zost. Ján Bujňák, Mario Guagliano. -- 1. vyd. -- Amsterdam : Elsevier 2021. -- online, 1804 s. -- (Transportation Research Procedia ; Vol. 55 ISSN 2352-1457 ISSN 2352-1465). -- ISSN : 2352-1465. Bujňák, Ján. Guagliano, Mario