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Zhang, M.; Delgado-Frias, J.G.; Vassiliadis, S. (1994), "Table driven Newton scheme for high precision logarithm generation", IEE Proceedings - Computers and Digital Techniques, 141 (5): 281–92, doi:10.1049/ip-cdt:19941268, ISSN1350-2387, mục 1
Pierce Jr., R. C. (tháng 1 năm 1977), "A Brief History of Logarithms", The Two-Year College Mathematics Journal, 8 (1), Mathematical Association of America: 22–26, doi:10.2307/3026878, JSTOR3026878
Zhang, M.; Delgado-Frias, J.G.; Vassiliadis, S. (1994), "Table driven Newton scheme for high precision logarithm generation", IEE Proceedings - Computers and Digital Techniques, 141 (5): 281–92, doi:10.1049/ip-cdt:19941268, ISSN1350-2387, mục 1
Bateman, P.T.; Diamond, Harold G. (2004), Analytic number theory: an introductory course, New Jersey: World Scientific, ISBN978-981-256-080-3, OCLC492669517, định lý 4.1