Hradec Economic Days 2018 : Production Economics in the Context of Industry 4.0. International Scientific Conference. Hradec Economic Days : Double-Blind Peer-Reviewed Proceedings Part I. of the International Scientific Conference : January 30-31, 2018, Hradec Králové, Czech Republic. Vol. 8 (1). 1st edition. Hradec Králové : University of Hradec Králové, 2018. online [592 s.]. ISBN 978-80-7435-700-8. ISSN 2464-6067.