1. Robert Kromoser , Robin Lemke and Michael F. Strohmer . 2021 . Assessment of Excellence in Procurement. Retrieved 27 November 2022 from https://www.atkearney.de/procurement Robert Kromoser, Robin Lemke and Michael F. Strohmer. 2021. Assessment of Excellence in Procurement. Retrieved 27 November 2022 from https://www.atkearney.de/procurement
2. Günther Hofbauer , Anna Glazunova and Dirk Hecht . 2015 . Strategische Lieferantenauswahl , Working Paper , No. 36 in „Arbeitsberichte – Working Papers“, 1–3; 12, Technische Hochschule Ingolstadt Günther Hofbauer, Anna Glazunova and Dirk Hecht. 2015. Strategische Lieferantenauswahl, Working Paper, No. 36 in „Arbeitsberichte – Working Papers“, 1–3; 12, Technische Hochschule Ingolstadt
3. You'll never walk alone: Why we need a supply chain practice view on digital procurement
4. Digital Purchasing and procurement systems, in: Bart L. MacCarthy, Dmitry Ivanov (eds.) The Digital Supply Chain;Cox Karsten;Chapter,2022
5. First-Order Dynamic Logic