SZOKE, Zoltan, Technical University of Cluj-Napoca
SZOKE, Zoltan SZYMAŃSKA, Olga, Poznan School of Logistics.
SZYMCZYK, Sebastian, Łukasiewicz Research Network – Poznań Institute of Technology, 6 Ewerysa Estkowskiego street, 61-755 Poznań, Poland. E-mail: Office Phone: (+48) 61 850 49 00
