1. Sears, D., et al.: The Hera mission: multiple near-earth asteroid sample return. Adv. Sp. Res. 34, 2270–2275 (2004)
2. Tsiganis, K., Kueppers, M., Michel, P.: Hera—the European contribution to the international AIDA mission to Didymos. In: Proceeding of EGU General Assembly, Vienna, Austria (2019)
3. Cheng, A.F., et al.: Asteroid impact & deflection assessment mission: kinetic impactor. Planet. Sp. Sci. 121, 27–35 (2016)
4. Richardson, D.C. et al.: Dynamical and physical properties of 65803 Didymos. In: Proceeding of 47th Lunar and Planetary Science Conference, Woodlands, Texas (2016)
5. Cheng, A.F. et al.: The double asteroid redirection test (DART) element of the asteroid impact and deflection assessment (AIDA) mission. In: Proceeding of 48th Lunar and Planetary Science Conference, Woodlands, Texas (2017)