1. The Ikhana unmanned airborne system (UAS) western states fire imaging missions: from concept to reality (2006–2010)
2. Amon, P., U. Riegl, P. Rieger, and M. Pfennigbauer, & OTHERS. (2015). UAV-Based Laser Scanning to Meet Special Challenges in LiDAR Surveying. Retrieved from http://www.ee.co.za/wp-content/uploads/2015/08/Philipp-Amon-Ursula-Riegl-Peter-Rieger-Martin-Pfenningbauer.pdf
3. Lightweight unmanned aerial vehicles will revolutionize spatial ecology
4. Austin, R. (2010). Unmanned Aircraft Systems: UAVS Design, Development and Deployment - Reg Austin. Retrieved July 8, 2016, from http://eu.wiley.com/WileyCDA/WileyTitle/productCd-0470058196.html
5. AUVSI Economic Report, 2013. The Economic Impact of Unmanned Aircraft Systems Integration in the United States. Available online at: https://higherlogicdownload.s3.amazonaws.com/AUVSI/958c920a-7f9b-4ad2-9807-f9a4e95d1ef1/UploadedImages/New_Economic%20Report%202013%20Full.pdf (accessed 17 January 2017).