Gupta's derivation of Einstein's equations
Vladik Kreinovich · OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) · 1975
It is shown that in the third (c/sup -2/) approximation arguments do not lead to the equations of general relativity, so that they do not give anything more than a post-Newtonian approximation of the theory. (JFP)