Book 1
Ways Out of the Working Capital Trap
Erik Hofmann, Daniel Maucher, Sabrina Piesker & Philipp Richter
Book 2
Capital Equipment Purchasing
Erik Hofmann, Daniel Maucher, Jens Hornstein & Rainer den Ouden
Book 3
Performance Measurement and Incentive Systems in Purchasing
Erik Hofmann, Daniel Maucher, Martin Kotula & Oliver Kreienbrink