SpringerLink (Online service) & Gülhan, A. (2008). RESPACE – Key Technologies for Reusable Space Systems: Results of a Virtual Institute Programme of the German Helmholtz-Association, 2003 – 2007. Springer Berlin Heidelberg.
Παραπομπή σε μορφή Chicago (17η εκδ.)SpringerLink (Online service) και Ali Gülhan. RESPACE – Key Technologies for Reusable Space Systems: Results of a Virtual Institute Programme of the German Helmholtz-Association, 2003 – 2007. Berlin, Heidelberg: Springer Berlin Heidelberg, 2008.
Παραπομπή σε μορφή MLA (8th εκδ.)SpringerLink (Online service) και Ali Gülhan. RESPACE – Key Technologies for Reusable Space Systems: Results of a Virtual Institute Programme of the German Helmholtz-Association, 2003 – 2007. Springer Berlin Heidelberg, 2008.
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