SpringerLink (Online service), Klatte, D., Lüthi, H., & Schmedders, K. (2012). Operations Research Proceedings 2011: Selected Papers of the International Conference on Operations Research (OR 2011), August 30 - September 2, 2011, Zurich, Switzerland. Springer Berlin Heidelberg : Imprint: Springer.
Παραπομπή σε μορφή Chicago (17η εκδ.)SpringerLink (Online service), Diethard Klatte, Hans-Jakob Lüthi, και Karl Schmedders. Operations Research Proceedings 2011: Selected Papers of the International Conference on Operations Research (OR 2011), August 30 - September 2, 2011, Zurich, Switzerland. Berlin, Heidelberg: Springer Berlin Heidelberg : Imprint: Springer, 2012.
Παραπομπή σε μορφή MLA (8th εκδ.)SpringerLink (Online service), et al. Operations Research Proceedings 2011: Selected Papers of the International Conference on Operations Research (OR 2011), August 30 - September 2, 2011, Zurich, Switzerland. Springer Berlin Heidelberg : Imprint: Springer, 2012.
