„THE BAR CODES AND THE TECHNOLOGY OF CARGO TRANSPORT SYSTEMS FOR PACKETS AND SMALL INDIVIDUAL PACKAGES IN THE CZECH REPUBLIC", PC, roč. 4, č. 4, s. 78–83, pro. 2009, Viděno: 5. březen 2026. [Online]. Dostupné z: https://pernerscontacts.upce.cz/index.php/perner/article/view/1185