NASA NTRS2013Recent Advances in Realizing the Terrestrial Reference System from GPSNo abstract availableGeocenter Motion↗
NASA NTRS2012Accuracy and Stability of a Terrestrial Reference Frame Realized from GPS DataNo abstract availableGlobal Positioning System (GPS)↗
NASA NTRS2012Laboratory Simulations of Maritan Meteorite Impacts and Their Seismic Signatures: How Hard Do We Need to Hit Mars to See What It's Made Of?No abstract availableimpacts↗