@article{SchneiderPietersSonntag2005, author = {Katrin Schneider and Reinder Pieters and Herbert Sonntag}, title = {Supplier Development in the Procurement Process at MTU Aero Engines (Focus on Suppliers of Services)}, journal = {Wissenschaftliche Beitr{\"a}ge 2005}, volume = {10}, pages = {57 -- 62}, year = {2005}, }