A. Einstein, N. Rosen: The Particle Problem in the General Theory of Relativity. In: Phys. Rev. Band48, 1935, S.73–77, doi:10.1103/PhysRev.48.73 (aps.org [PDF; 908kB]).
doi.org
A. Einstein, N. Rosen: The Particle Problem in the General Theory of Relativity. In: Phys. Rev. Band48, 1935, S.73–77, doi:10.1103/PhysRev.48.73 (aps.org [PDF; 908kB]).