1912: A turning point on Einstein's way to general relativity Blum, A. S. ; Renn, Jürgen ; Salisbury, Donald C. ; Schemmel, Matthias ; Sundermeyer, Kurt Abstract Publication: Annalen der Physik Pub Date: January 2012 DOI: 10.1002/andp.201100705 Bibcode: 2012AnP...524A..11B