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2. The fundamental theorem of arithmetic dissected
3. Euler, L.1770. Vollständige Einleitung zur Algebra. St. Petersburg; French translation with Additions by Joseph, L. Lagrange. Lyon, 1774; republished in Vol. 7 of Lagrange's Oeuvres and in Vol. (1)1 of Euler's Opera; English translation Elements of Algebra [trans. John, Hewlett, London, 1840], reprinted Berlin/Heidelberg/New York, Springer-Verlag, 1985.
4. Gauss, C. F. 1801, Disquisitiones Arithmeticae. Leipzig; Translated into English by, A. C. Clarke, New Haven, CT, Yale University Press, 1966.
5. On a seventeenth century version of the fundamental theorem of arithmetic;Goldstein;Historia Mathematica,1992