[BIPM. (2017) Circular T 349, Retrieved 16 May 2017, from: http://www.bipm.org/jsp/en/TimeFtp.jsp?TypePub=publication.]Search in Google Scholar
[BIPM KCDB (2017) Calibration and Measurement Capabilities: Time and Frequency; Retrieved 19 August 2017, from: http://kcdb.bipm.org/appendixC/TF/TH/TF_TH.pdf]Search in Google Scholar
[Huang G, Zhang Q, FU W and Guo H. (2015) GPS/GLONASS time offset monitoring based on combined Precise Point Positioning (PPP) approach. Journal of Advances in Space Research, 55, 2950-2960.10.1016/j.asr.2015.03.003]Search in Google Scholar
[IERS. (2017) IERS Conventions, Retrieved 16 May 2017, from http://tai.bipm.org/iers/convupdt/convupdt.html.]Search in Google Scholar
[Lombardi MA and Brown KH. (2001) NIST Frequency Measurement and Analysis System: Operator’s Manual, Colorado, USA.10.6028/NIST.IR.6610]Search in Google Scholar
[Microsemi. (2017) Cesium primary frequency standard, Retrieved 20 May 2017, from https://www.microsemi.com/products/timing-synchronization-systems/time-frequency-references/cesium-frequency-standards/5071a.]Search in Google Scholar
[NIST. (2017) NIST Time and Frequency from A to Z, Frequency offset, Retrived 20 May 2017, from https://www.nist.gov/time-and-frequency-services/f.]Search in Google Scholar
[Riley WJ. (2008) NIST special Publication 1065 Handbook of Frequency Stability Analysis, US government printing office, Washington.10.6028/NIST.SP.1065]Search in Google Scholar
[Teunissen PJG and Kleusberg A (Eds.). (1998) GPS for geodesy, Springer-Verlag Berlin Heidelberg, 2nd edition.10.1007/978-3-642-72011-6]Search in Google Scholar
[Trimble. (2017) Trimble NetR9 GNSS Reference Receiver, Retrieved 20 May 2017, from http://www.trimble.com/Infrastructure/Trimble-NetR9.aspx.]Search in Google Scholar
[Yang Y. (2014) Training book part 1, International training workshop on BeiDou technology and its applications, Wuhan Hubei, China.]Search in Google Scholar
[UNOOSA. (2017) Regional reference systems, Retrieved 16 May 2017, from http://www.unoosa.org/oosa/en/ourwork/icg/resources/Regl-ref.html.]Search in Google Scholar
