RT Journal Article SR Electronic A1 Poliak, Miloš A1 Šimurková, Patrícia A1 Poliaková, Adela A1 Jaśkiewicz, Marek T1 JF Transport And Communications YR 2017 VO 5 IS 2 SP 25 OP 29 DO 10.26552/tac.C.2017.2.6 UL https://tac.uniza.sk/artkey/tac-201702-0006.php AB