1. Factors affecting the purchasing decision and operation of alternative fuel-powered heavy-duty trucks in Germany - a Delphi study;Anderhofstadt;Transp. Res. D,2019
2. Bentenrieder, M., Boilard, M., Buss, J., Brandt, F., & Chien, A. (2017). Digital Business Models for Automakers. Retrieved 10 January 2018, from goo.gl/CBLDxu.
3. Pattern Recognition With Fuzzy Objective Function Algorithms;Bezdek,1981