Responsible ProcurementStefan Aichbauer, Martina Buchhauser, Agnes Erben, Sven Steinert, Detlef Tietze · First published 2022Open the Tome
Procurement 4. 0Alexander Batran, Agnes Erben, Franziska Sperl, Thomas Karutz, Ralf Schulze · First published 2017Open the Tome
