1. ESA’s Annual Space Environment Report;ESA Space Debris Office,2019
2. Orbital Debris Quarterly News;Anz-Meador;NASA,2020
3. The 2019 us government orbital debris mitigation standard practices;Liou;Small Satellite Conference,2020
4. NASA, NASA Orbital Debris Program Office, 2021. https://orbitaldebris.jsc.nasa.gov/mitigation/.
5. Major fragmentation of Atlas 5 Centaur upper stage 2014055B (SSN #40209);Agapov,2018