1. Achtelik, M., Bachrach, A., He, R., Prentice, S., & Roy, N. (2009). Stereo vision and laser odometry for autonomous helicopters in GPS-denied indoor environments. In Proceedings of unamanned systems technology XI (SPIE’09), Orlando (Vol. 7332, pp. 1901–1910). Bellingham: The International Society for Optical Engineering.
2. Bachrach, A., He, R., & Roy, N. (2009). Autonomous flight in unstructured and unknown indoor environments. In Proceedings of the 2009 European micro air vehicle conference and flight competition (EMAV’09).
3. Blösch, M., Weiss, S., Scaramuzza, D., & Siegwart, R. (2010). Vision based mav navigation in unknown and unstructured environments. In 2010 IEEE international conference on robotics and automation (ICRA) (pp. 21–28).
4. Bonani, M., Longchamp, V., Magnenat, S., Rétornaz, P., Burnier, D., Roulet, G., Vaussard, F., Bleuler, H., & Mondada, F. (2010). The MarXbot, a miniature mobile robot opening new perspectives for the collective-robotic research. In International conference on intelligent robots and systems (IROS), 2010 IEEE/RSJ (pp. 4187–4193). New York: IEEE Press.
5. Breitenmoser, A., Kneip, L., & Siegwart, R. (2011). A monocular vision-based system for 6d relative robot localization. In Proc. of the IEEE/RSJ international conference on intelligent robots and systems (IROS).