The Universal History of Numbers: From Prehistory to the Invention of the Computer. — John Wiley & Sons., 2000. ↑ Unicode Standard, 15.3 («For most purposes, it is preferable to compose the Roman numerals from sequences of the appropriate Latin letters.») 1 2 Unicode Number Forms ↑ Perry, David J. Proposal to Add Additional Ancient Roman Characters to UCS. ↑ Для первых двух строк ↑ Глава 31.