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Rektor Chr. Zeller's 1883 Paper
"Problema duplex Calendarii fundamentale".

Images of the 1883 Paper

"Problema duplex Calendarii fundamentale;" Par M. Ch. Zeller, Bulletin de la Société Mathématique de France, vol.11, pp.59-61, (Séance du 16 mars 1883) - in Latin.

Note the Continental use of comma for decimal separator and dot for multiplication.

From scans by Anthony Holley, of photocopies.

The paper shown above is translated and discussed in zel-1883.htm.