1. Cost Analysis of Present Expendable Launch Vehicles as contribution to Low Cost Access to Space Study;Koelle,1966
2. Total System Costing of Risk in a Launch Vehicle;Parkinson,1993
3. Qualification Over Ariane's Lifetime;Blazquez;ESA Bulletin,1998
4. “Esa Launch Vehicle Catalogue” European Space Agency, Paris,, Revision 8: December 1997.