Lehner, Christoph Department Structural Changes in Systems of Knowledge, Max Planck Institute for the History of Science, Max Planck Society;
Lehner, C. (2005). Einstein and the principle of general relativity, 1916-1921. In A. J., Kox, & J., Eisenstaedt (Eds.), The universe of general relativity (pp. 103-108). Boston [u.a.]: Birkhäuser.