Zbigniew Lukasik, Aldona Kuśmińska-Fijalkowska and Sylwia Olszańska (2021) “Improvement of the Logistic Processes using the Reverse Logistics Concept”, Communications - Scientific letters of the University of Zilina, 23(3), pp. A174-A183. doi: 10.26552/com.C.2021.3.A174-A183.