References
R. D. Lorenz, Scaling Laws for Flight Power of Airships, Airplanes and Helicopters : Application to Planetary Exploration, Journal of Aircraft, 38, 208-214, 2001 (not online as far as I know)
A. A. Pankine, K. M. Aaron, M. K. Heun, K. T. Nock, S. R. Schlaifer, C. J. Wyszkowsky, A. P. Ingersoll, and R. D. Lorenz, Directed Aerial Robot Explorers (DARE) for Planetary Exploration, Advances in Space Research, pdf
http://www.lpl.arizona.edu/~rlorenz/pankine.pdf
http://www.gaerospace.com/projects/DARE/DARE.html
