Second-order scalar-tensor field equations in a four-dimensional space | International Journal of Theoretical Physics
,Tensor Calculus for Physics | Hopkins Press,Tensor Calculus for Physics - by Dwight E Neuenschwander (Paperback),Second-order scalar-tensor field equations in a four-dimensional space | International Journal of Theoretical Physics,The Scalar-Tensor Theory of Gravitation (Cambridge Monographs on Mathematical Physics)