Meyer, Henning Jürgen, Carsten Kausch, und Norbert Diekhans. „Teleservicesysteme“. agricultural engineering.eu 53, no. 2 (April 27, 1998): 104–105. Zugegriffen Mai 1, 2025. https://www.agricultural-engineering.eu/landtechnik/article/view/1998-53-2-104-105.