Babin, Anatoli; Figotin, Alexander Relativistic point dynamics and Einstein formula as a property of localized solutions of a nonlinear Klein-Gordon equation. (English) Zbl 1272.83010 Commun. Math. Phys. 322, No. 2, 453-499 (2013). MSC: 83C05 35L05 83A05 83C40 PDFBibTeX XMLCite \textit{A. Babin} and \textit{A. Figotin}, Commun. Math. Phys. 322, No. 2, 453--499 (2013; Zbl 1272.83010) Full Text: DOI arXiv
Friedrich, Helmut On the hyperbolicity of Einstein’s and other gauge field equations. (English) Zbl 0588.35058 Commun. Math. Phys. 100, 525-543 (1985). MSC: 35L45 83C05 83C30 58J45 35B40 PDFBibTeX XMLCite \textit{H. Friedrich}, Commun. Math. Phys. 100, 525--543 (1985; Zbl 0588.35058) Full Text: DOI
Folomeshkin, V. N. The quadratic Lagrangians in general relativity. (English) Zbl 0221.70005 Commun. Math. Phys. 22, 115-120 (1971). MSC: 70H03 PDFBibTeX XMLCite \textit{V. N. Folomeshkin}, Commun. Math. Phys. 22, 115--120 (1971; Zbl 0221.70005) Full Text: DOI