Jovanović, Radmila, Milan Delić, Bato Kamberović, Srđan Vulanović, and Vladan Radlovački. 2013. “Planning the Use of Lean Six Sigma As a Framework for Blood Bank Management Improvements”. International Journal of Industrial Engineering and Management 4 (4):237-44. https://doi.org/10.24867/IJIEM-2013-4-129.