Allgemeine Relativitätstheorie und Bewegungsgesetz. Offprint from Sitzungsbericht der Preussischen Akademie der Wissenschaften. (THE PROBLEM OF MOTION IN GENERAL RELATIVITY). 6 January 1927, pp. 2-13
Berlin: Verlag der Akademie der Wiss. 1927. 1st Edition. FIRST EDITION, OFFPRINT ISSUE IN ORIGINAL PAPER WRAPS, VERY GOOD CONDITION. “Einstein and Grommer’s work [treats] the particle as a singularity in the field, and attempts[s] to obtain the equations of motion by imposing conditions on the exterior field in the..... More