Milena Bieniek received her PhD in Mathematics at Maria-Curie Sklodowska University (UMCS) in Lublin, Poland. She is an Assistant Professor at the Institute of Management and Quality Sciences UMCS. She teaches mathematics, statistics, operations research, and econometrics. Her research interests are in statistics, logistics, and operations research. She is particularly interested in inventory management and supply chain contracts. Recently, her work has focused on new issues concerning newsvendor problems. She is the author of research studies published in peer-reviewed journals and also a reviewer in leading journals in operations research.