@inproceedings{DachwaldKahleWie2022,
  author    = {Bernd Dachwald and Ralph Kahle and Bong Wie},
  title     = {Solar sail Kinetic Energy Impactor (KEI) mission design tradeoffs for impacting and deflecting asteroid 99942 Apophis},
  booktitle = {AIAA/AAS Astrodynamics Specialist Conference and Exhibit},
  pages     = {1 -- 20},
  doi       = {10.2514/6.2006-6178},
  year      = {2022},
}