1. Air Force Instruction 91-202. (2020, Mar. 12). The US Air Force Mishap Prevention Program. paragraph 1.6.10.20. https://static.e-publishing.af.mil/production/1/af_se/publication/afi91-202/afi91-202.pdf.
2. Trending analysis of historical conjunction data messages;Moomey;J. Space Safety Eng.,2020
3. Expected collision avoidance manoeuver rates in DRAMA-ARES based on a history of conjunction data messages;Braun,2018
4. The cost of not doing debris remediation;McKnight,2019
5. Alfano, S., Oltroggee, D., Shepperd, R., LEO Constellation Encounter and Collision Rate Estimation: An Update, 2nd ICSSA, Washington D.C., Jan. 14-16, 2020. Paper No. IAC-ICSSA-20-0021. https://comspoc.com/Resources/Content/Private/C-20220423T092204/Presentation/20200116_LEO_Encounter_Rate_Update_PRESENTED.show.pdf