1. Baxley, B., Swieringa, K., Wilson, S., Roper, R., Abbot, T., Hubbs, C., Goes, P., and Shay, R. "Air Traffic Management Technology Demonstration-1 (ATD-1) Avionics Phase 2 Flight Test Results," NASA TP2018-291814
2. Jung, Y., Engelland, S., Capps, A., Coppenbarger, R., Hooey, B., Sharma, S., Lohr, G., Chevalley, E., Dulchinos, V., Malik, W., and Ruskowki, L. "Airspace Technology Demonstration 2 (ATD-2) Phase 1 Concept of Use (ConUse)," NASA TM-2018-219770.