Ranjay Gulati and Jason GarinoGet the right mix of bricks & clicks (2000) Robert handfield, steven V. Walton, Robert Sroufe, Steven A. MelnykApplying environmental criteria to supplier assessment:A study in the application of the Analytical Hierarchy Process (2002) Marshall L. Fisher, Janice H. Hammond, Walter R. Obermeyer, Ananth RamanMaking supply meet demand in an uncertain world (1994) Edwar..