Yoseph Bar-Cohen Stewart Sherrit Xiaoqi Bao Zensheu Chang Ultrasonic/Sonic Sampler and Sensor Platform for In-Situ Planetary Exploration. 22-21 2003 conf/icmens/2003 ICMENS http://csdl.computer.org/comp/proceedings/icmens/2003/1947/00/19470022abs.htm db/conf/icmens/icmens2003.html#Bar-CohenSBC03