Tham khảo Giản đồ-k Bondi

  1. For example, Woodhouse, NMJ (2003), Special Relativity, Springer, ISBN 1-85233-426-6, pp.58–65
  2. For example, Ray d'Inverno (1992). “Chapter 2: The k-calculus”. Introducing Einstein's Relativity. Clarendon Press. ISBN 0-19-859686-3.
  3. Bondi, Hermann (1964). Relativity and Common Sense. New York: Doubleday & Company. (Also published in 1965 in Great Britain by Heinemann, and reprinted in 1980 by Dover.)
  4. 1 2 3 d'Inverno (1992), p.40
  5. Milne, E.A. (1935), Relativity Gravitation and World Structure, Oxford University Press, pp.36–38
  6. Bondi (1964), p.109
  7. 1 2 3 Bondi (1964) p.80
  8. Bondi (1964) p.88
  9. Bondi (1964) p.77
  10. Bondi (1964), pp.80–90
  11. 1 2 Woodhouse (2003) p.60
  12. 1 2 Bondi (1964), p.103
  13. Woodhouse (2003), p.64
  14. Woodhouse (2003), p.65
  15. 1 2 Bondi (1964) p.105
  16. 1 2 3 Bondi (1964), p.118
  17. 1 2 Woodhouse (2003), p.67
  18. 1 2 Woodhouse (2003), p.71