1. RTCA: Terms of Reference: RTCA Special Committee 228 Minimum Performance Standards for Unmanned Aircraft Systems. RTCA Inc., Washington (2013)
2. Federal Aviation Administration (FAA): Integration of Civil UAS in the NAS Roadmap, 1st edn. FAA, Washington (2013)
3. Code of Federal Regulations: 14 CFR, Part 91, Sec. 91.113 (2004)
4. Santiago, C., Mueller, E.R.: Pilot evaluation of a UAS detect-and-avoid system’s effectiveness in remaining well clear. In: 11th USA/Europe Air Traffic Management Research and Development Seminar, Lisbon (2015)
5. Bell, S., Drury, J., Estes, S., Reynolds, C.: GDTI: A ground station display of traffic information for use in sense and avoid operations. In: 2012 IEEE/AIAA 31st Digital Avionics Systems Conference (DASC), Williamsburg, VA (2012)