Theoretical materials

• Transformation between the International Terrestrial Reference System and the Geocentric Celestial Reference System. Chapter 5 of IERS Conventions (2010).
  Gérard Petit and Brian Luzum (eds.). (IERS Technical Note ; 36)
  Frankfurt am Main: Verlag des Bundesamts für Kartographie und Geodäsie, 2010. 179 pp.,
  ISBN 3-89888-989-6.
  
  
• Leap second.
  
• Earth’s orientation parameters.