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Iwona Bąk
Ph.D., Associate Professor, West Pomeranian University of Technology in Szczecin Department of Applied Mathematics in Economics Janickiego 31, 71-270Szczecin, Poland
Katarzyna Cheba
Ph.D. West Pomeranian University of Technology in Szczecin Department of Applied Mathematics in Economics Janickiego 31, 71-270Szczecin, Poland