D O C . 4 F O U N D AT I O N S O F G E N E R A L R E L AT I V I T Y 3 7
4. “On the Foundations of the
General Theory of Relativity”
[Einstein 1918e]
Received 6 March 1918
Published 24 May 1918
In: Annalen der Physik 55 (1918): 241–244.