Atkinson, N. 2004. Magnetic Bubble Could Protect As tronauts on Long Trips. Universe Today,
143
Holzscheiter, M. I. L. et al. 1996. Production and trapping of antimatter for space propulsion applications. American Institute of Aeronautics and Astronautics-1996-2786 ASME, SAE, and ASEE, Joint Propulsion Conference and Exhibit, 32nd, Lake Buena Vista, FL, July 1–3.