Press* Whitrow, G. J. and Morduch, G. E. (1960) General relativity and Lorentz-invariant theories of gravitations, "Nature" 188, 790-794* Whitrow, G. J. and Morduch, G. E. (1965) Relativistic theories of gravitation, "Vistas in Astronomy" 6, 1-67* Will, C. M. (1981, 1993) "Theory and Experiment in Gravitational Physics", Cambridge Univ.
Press* Whitrow, G. J. and Morduch, G. E. (1960) General relativity and Lorentz-invariant theories of gravitations, Nature 188, 790—794* Whitrow, G. J. and Morduch, G. E. (1965) Relativistic theories of gravitation, Vistas in Astronomy 6, 1-67* Will, C. M. (1981, 1993) Theory and Experiment in Gravitational Physics, Cambridge Univ.