PT Journal AU Wolak-Tuzimek, A Noworol-Luft, E Luft, R SO Transport And Communications PY 2014 BP 17 EP 20 VL 2 IS 2 DI 10.26552/tac.C.2014.2.4 WP https://tac.uniza.sk/artkey/tac-201402-0004.php SN 13395130 ER