1. Alexander, H.G. (ed.): The Leibniz-Clarke Correspondence Together with Extracts from Newton’s Principia and Opticks. Manchester University Press, Manchester (1956)
2. Mach, E.: Die Mechanik in ihrer Entwicklung. Historisch-kritisch dargestellt (F.A. Brockhaus: Leipzig, 1883) The Science of Mechanics: A Critical and Historical Account of Its Development. The Open Court Publishing Co.: Chicago (1893)
3. Einstein, A.: The Meaning of Relativity. Princeton University Press, Princeton (1922)
4. Reissner, H.: Phys. Z. 15, 371–375 (1914) (English translation in Ref. 8)
5. Schrödinger, E.: Ann. Phys. 382, 325–336 (1925) (English translation in Ref. 8)