PT Journal AU Rut, P Lusiak, T Novak, A Zacik, N SO Transport And Communications PY 2015 BP 17 EP 21 VL 3 IS 2 DI 10.26552/tac.C.2015.2.4 WP https://tac.uniza.sk/artkey/tac-201502-0004.php SN 13395130 ER