1. Strabon: 23 A.D.Geographika,Ameseia (English translation by H. L.Jones, Loeb Classical Library, 1917-1932).
2. Ptolemaios. K.: c. 150 A.D.,Mathematike syntaxis (?Almagest?). Alexandria (English translation with annotations by G. J. Toomer, Duckworth & Co., 1984.)
3. Copernicus. N.: 1543,De Revolutionibus Orbium Coelestium Libri VI, Nürnberg. (English translation in Great Books of the Western World, 16, 1952.)
4. Galilei. G.: 1632,Dialogo Sopra i Due Massimi Sistemi del Mondo, Tolemaico e Copernicano, Firenze. (English translation, University of California Press, 1953.)
5. Wallis. J.: 1666, ?Hypothesis About the Flux and Reflux of the Sea?,Philosophical Transactions of the Royal Society 1, London.