A. Saraf, M. Popish, V. Sui, N. Luch, M. Rose, B. Levy, J. Cardillo, H. Balakrishnan, S. Badrinath, R. Coppenbarger “Simulation-based Benefits and Costs Assessment of NASA’s Airspace Technology Demonstration-2” IEEE/AIAA Digital Avionics Systems Conference (DASC) . (2018): 1-10. Print.