1. A statistic for describing pulsar and clock stabilities;Matsakis;Astron Astrophys,1997
2. Absolute timing of the Crab pulsar with ROSSI X-ray timing explorer;Rots;Astrophys J,2004
3. Sheikh SI. The use of variable celestial X-ray sources for spacecraft navigation [dissertation]. Maryland: University of Maryland; 2005.
4. Emadzadeh AA. Relative navigation between two spacecraft using X-ray pulsars [dissertation]. Los Angeles: University of California; 2009.
5. Doppler/XNAV-integrated navigation system using small-area X-ray sensor;Liu;IET Radar Sonar Navig,2011