The Thirteenth Marcel Grossmann Meeting on Recent Developments in Theoretical and Experimental General Relativity, Astrophysics, and Relativistic Field Theories proceedings of the MG13 Meeting on General Relativity, Stockholm University, Sweden, 1-7 July 2012 - Rosquist, Kjell, 1948-; Jantzen, Robert T.; Ruffini, Remo (World Scientific, 2015)