XXXV. <i>Observations on the note of Dr. L. Silberstein: Determination of the Curvature invariant of space-time</i> (Phil. Mag. xlvii. 1924, pp. 907–917)

"XXXV. Observations on the note of Dr. L. Silberstein: Determination of the Curvature invariant of space-time (Phil. Mag. xlvii. 1924, pp. 907–917)." The London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science, 48(284), pp. 348–349