17, 2012, from http://www.scitopics.com/Einsteinian_gravity_from_a_topological_action.html Further reading Grünbaum, Adolf (1973): Geometrodynamics and Ontology, The Journal of Philosophy, vol. 70, no. 21, December 6, 1973, pp. 775–800, online version (subscription required) Mielke, Eckehard W. (1987): Geometrodynamics of Gauge Fields --- On the geometry of Yang—Mills and gravitational gauge theories, (Akademie—Verlag, Berlin), 242 pages. (2nd Edition, Springer International Publishing Switzerland, Mathematical Physics Studies 2017), 373 pages. Theoretical physics Theories of gravity