[4] Liviu Mureșan, Alexandru Georgescu, The Road to Resilience in 2050 - Critical Space Infrastructure and Space Security, The RUSI Journal, Vol. 160, Issue 6, pp. 59, 201510.1080/03071847.2015.1123948
[5] National Academies of Sciences, Engineering, and Medicine, National Security Space Defense and Protection: Public Report, Washington, DC: The National Academies Press, pp. 7, 2016, available at https://www.nap.edu/read/23594/chapter/2#7
[11] Liviu Mureșan, Alexandru Georgescu, The Road to Resilience in 2050 - Critical Space Infrastructure and Space Security, The RUSI Journal, Vol. 160, Issue 6, pp. 60, 201510.1080/03071847.2015.1123948