"Welcome to French Guiana"(PDF). arianespace.com. Arianespace. 23 September 2015 tarixində orijinalından(PDF) arxivləşdirilib. İstifadə tarixi: 19 August 2014.
HSF Final Report: Seeking a Human Spaceflight Program Worthy of a Great NationArxivləşdirilib 2019-02-16 at the Wayback Machine, October 2009, Review of U.S. Human Spaceflight Plans Committee, p. 64-66: "5.2.1 The Need for Heavy Lift ... require a “super heavy-lift” launch vehicle ... range of 25 to 40 mt, setting a notional lower limit on the size of the super heavy-lift launch vehicle if refueling is available ... this strongly favors a minimum heavy-lift capacity of roughly 50 mt ..."
"Welcome to French Guiana"(PDF). arianespace.com. Arianespace. 23 September 2015 tarixində orijinalından(PDF) arxivləşdirilib. İstifadə tarixi: 19 August 2014.
HSF Final Report: Seeking a Human Spaceflight Program Worthy of a Great NationArxivləşdirilib 2019-02-16 at the Wayback Machine, October 2009, Review of U.S. Human Spaceflight Plans Committee, p. 64-66: "5.2.1 The Need for Heavy Lift ... require a “super heavy-lift” launch vehicle ... range of 25 to 40 mt, setting a notional lower limit on the size of the super heavy-lift launch vehicle if refueling is available ... this strongly favors a minimum heavy-lift capacity of roughly 50 mt ..."