Ilin, Andrew V.; Gilman, Daniel A.; Carter, Mark D.; Chang Díaz, Franklin R.; Squire, Jared P.; Farrias, Joseph E. (2013). VASIMR Solar Powered Missions for NEA Retrieval and NEA Deflection(PDF). 33rd International Electric Propulsion Conference. October 6–10, 2013. Washington, D.C. IEPC-2013-336. Arkiveret fra originalen(PDF) 14. maj 2014. Hentet 1. februar 2015.
Ilin, Andrew V.; Gilman, Daniel A.; Carter, Mark D.; Chang Díaz, Franklin R.; Squire, Jared P.; Farrias, Joseph E. (2013). VASIMR Solar Powered Missions for NEA Retrieval and NEA Deflection(PDF). 33rd International Electric Propulsion Conference. October 6–10, 2013. Washington, D.C. IEPC-2013-336. Arkiveret fra originalen(PDF) 14. maj 2014. Hentet 1. februar 2015.