1. 1572 R. Bombelli. ĽAlgebra, Parte Maggiore delľAritimetica Divisa in Tre Libri. Bologna. Reprinted by Feltrinelli, Milano, 1966.
2. 1655 J. Wallis. Arithmetica Infinitorum. Reprinted in Opera Mathematica, Vol. I, Oxford, 1695.
3. 1685 J. Wallis. Tractatus de Algebra. Reprinted in Opera Mathematica, Vol. II, Oxford, 1695.
4. 1737 L. Euler. De fractionibus continuis dissertation. Comm. Acad. Sci. Petr., 9:98–137. Reprinted in Opera Omnia, Ser. I, Vol. 14, Commentationes Analyticae, 187–215. B. G. Teubner, Leipzig, 1924.
5. 1748 L. Euler. Introductio in Analysin Infinitorum, Vol. I, Chapter VI, §105. Lausanne. Reprinted in Opera Omnia, Ser. I, Vol. 8, 108–109. B. G. Teubner, Leipzig, 1922.