1. 18th Space Control Squadron, 2020. Spaceflight safety handbook for satellite operators: 18 SPCS processes for on-orbit conjunction assessment & collision avoidance. Version 1.5: August 2020. URL: https://www.space-track.org/documents/Spaceflight_Safety_Handbook_for_Operators.pdf.
2. Abay, R., Caldas, F., Filipe, M.A., Guimaraes, M., Lopes, H., Sebastiao, N., 2021. Benchmarking machine learning models for collision risk prediction in low-earth orbit. In: Proc. 8th European Conf. on Space Debris (ECSD). Darmstadt, Germany, 20–23 April 2021.
3. Acciarini, G., Pinto, F., Letizia, F., Martinez-Heras, J.A., Merz, K., Bridges, C., Baydin, A.G., 2021. Kessler: A machine learning library for spacecraft collision avoidance. In: Proc. 8th European Conf. on Space Debris (ECSD). Darmstadt, Germany, 20–23 April 2021.
4. Alarcón Rodríguez, J.R., Martínez-Fadrique, F.M., Klinkrad, H., 2002. Collision risk assessment with a “smart sieve” method. In: Proc. Joint ESA-NASA Space-Flight Safety Conf. Noordwijk, the Netherlands, 11–14 June 2002. pp. 159–164.
5. Development of a collision risk assessment tool;Alarcón-Rodríguez;Adv. Space Res.,2004