RT Journal Article SR Electronic A1 Poliak, Miloš A1 Tomaszewska, Iwona Ewa A1 Mikušová, Miroslava T1 JF Transport And Communications YR 2021 VO 9 IS 2 SP 17 OP 29 DO 10.26552/tac.C.2021.2.4 UL https://tac.uniza.sk/artkey/tac-202102-0004.php AB