http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
a collection of original memoirs on the special and general theory of relativity
H. A. Lorentz ... [κ.ά.] ; with notes by A. Sommerfeld ; translated by W. Perrett and G. B. Jeffery.
Unabridged and unaltered republication of the 1923 translation first published by Methuen and Company in 1923.