1. SEXTANT — Station Explorer for X-ray Timing and Navigation Technology;Mitchell,2015
2. The Neutron-Star Interior Composition Explorer (NICER): Mission Definition;Arzoumanian,2014
3. Spacecraft navigation using x-ray pulsars;Sheikh;AIAA Journal of Guidance, Controls, and Dynamics,2006
4. SEXTANT X-ray pulsar navigation demonstration: initial on-orbit results;Mitchell,2018
5. The Neutron Star Interior Composition Explorer (NICER): Design and Development;Gendreau,2016