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Logistics and Transport > 2018 > 40 > 43-50
Logistics and Transport > 2018 > Vol. 40, No. 4 > 43--50
Studia Ekonomiczne > 2018 > 359 > 18-36
Journal of Economics and Management > 2018 > 32 > 48-59
Studia Ekonomiczne > 2018 > 369 > 29-39
IEEE Security & Privacy > 2017 > 15 > 6 > 33 - 41
Studia i Materiały > 2017 > 2/2017 (24), cz.1 > 124-130
International Journal of Mining Science and Technology > 2017 > 27 > 4 > 611-616