Learning to Detect Small Impact Craters. - Philipp Georg Wetzler; Rie Honda; Brian L. Enke; William J. Merline; Clark R. Chapman; Michael C. Burl (WACV/MOTION, 2005)

Onboard object recognition for planetary exploration. - Michael C. Burl; Philipp Georg Wetzler (Mach. Learn., 2011)