1. Einstein, A. (1905/1952) ‘On the Electrodynamics of Moving Bodies’, in The Principle of Relativity, trans. W. Perrett and G. B. Jeffery (New York: Dover).
2. Einstein, A. (1911/1952) ‘On the Influence of Gravitation on the Propagation of Light’, in The Principle of Relativity, trans. W. Perrett and G. B. Jeffery (New York: Dover).
3. Einstein, A. (1917/1997) On the Special and General Theory of Relativity (A Popular Account), trans. R. Lawson, in The Collected Papers of Albert Einstein, Volume VI (Princeton: Princeton University Press).
4. Einstein, A. (1922/2002) The Meaning of Relativity, trans. E. Adams, in The Collected Papers of Albert Einstein, Volume VII (Princeton: Princeton University Press).
5. Galilei, G. (1632/1967) Dialogue Concerning the Two Chief World Systems, trans. S. Drake, 2nd edn (Berkeley: University of California Press).