1. Wu, X.J., Jiao, G.J., Xu, R.X.: Pulsar Physics. Peking University Press, Beijing (2018)
2. Andrew, L., Francis, G.S.: Pulsar Astronomy, 3rd edn. Cambridge University Press, Cambridge (2006)
3. Sheikh, S.I.: The use of variable celestial x-ray sources for spacecraft navigation. Department of Aerospace Engineering, University of Maryland (2005)
4. Yang, Y.X.: Concepts of comprehensive PNT and related key technologies. Acta Geodaetica et Cartographica Sinica 45(5), 505–510 (2016)
5. Shuai, P., Li, M., Chen, S.L., et al.: Principle and Method of X-Ray Pulsar Navigation System. China Aerospace Publishing House, Beijing (2009)