1. Dethloff, J. (2001): Vehicle routing and reverse logistics: the vehicle routing problem with simultaneous delivery and pick-up. In: OR Spektrum 23, pp. 79–96.
2. Dyckhoff, H. (2000): Umweltmanagement — Zehn Lektionen in umweltorientierter Unternehmensführung. Springer, Berlin et al.
3. Fandel, G., Dyckhoff, H., Reese, J. (1994): Industrielle Produktionsentwicklung — Eine empirisch-deskriptive Analyse ausgewählter Branchen, 2nd edn. Springer, Berlin et al.
4. Fleischmann, M. (2000): Quantitative Models for Reverse Logistics. Doct. Thesis, Rotterdam.
5. Frankl, P., Rubik, F. (2000): Life Cycle Assessment in Industry and Business — Adoption Patterns, Applications and Implications. Springer, Berlin et al.