http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
a critical and historical study of its development
by Roberto Bonola; authorized English translation with additional appendices by H. S. Carslaw
; with a suppl. containing the George Bruce Halsted translations of The science of absolute space by John Bolyai [and] The theory of parallels, by Nicholas Lobachevski