HSL Bibliography
"Slope and Distance Estimation Errors in a Lunar Environment (abstract)",
Aviation Space and Environmental Medicine, vol. 80, no. 3, pp. 266-267, March 2009.
"Slope, distance, and height estimation of lunar and lunar-like terrain in a virtual reality environment",
Gravitational Space Biology, vol. 22, no. 2, pp. 57-66, September 2009.