Lagrange's four-square theorem (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Lagrange's four-square theorem" in English language version.

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ams.org (Global: 451^st place; English: 277^th place)

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Landau 1958, Theorems 166 to 169. Landau, Edmund (1958) [1927]. Elementary Number Theory. Vol. 125. Translated by Goodman, Jacob E. (2nd ed.). AMS Chelsea Publishing.

archive.org (Global: 6^th place; English: 6^th place)

Ramanujan 1916. Ramanujan, S. (1916). "On the expression of a number in the form ax² + by² + cz² + du²". Mathematical Proceedings of the Cambridge Philosophical Society. 19: 11–21.

arxiv.org (Global: 69^th place; English: 59^th place)

Sun 2017. Sun, Z.-W. (2017). "Refining Lagrange's four-square theorem". J. Number Theory. 175: 167–190. arXiv:1604.06723. doi:10.1016/j.jnt.2016.11.008. S2CID 119597024.

colgate.edu (Global: low place; English: 9,382^nd place)

math.colgate.edu

Pollack & Treviño 2018. Pollack, P.; Treviño, E. (2018). "Finding the four squares in Lagrange's theorem" (PDF). Integers. 18A: A15.

doi.org (Global: 2^nd place; English: 2^nd place)

Ireland & Rosen 1990. Ireland, Kenneth; Rosen, Michael (1990). A Classical Introduction to Modern Number Theory (2nd ed.). Springer. doi:10.1007/978-1-4757-2103-4. ISBN 978-1-4419-3094-1.
Stillwell 2003, pp. 138–157. Stillwell, John (2003). Elements of Number Theory. Undergraduate Texts in Mathematics. Springer. doi:10.1007/978-0-387-21735-2. ISBN 978-0-387-95587-2. Zbl 1112.11002.
Rabin & Shallit 1986. Rabin, M. O.; Shallit, J. O. (1986). "Randomized Algorithms in Number Theory". Communications on Pure and Applied Mathematics. 39 (S1): S239 – S256. doi:10.1002/cpa.3160390713.
Sun 2017. Sun, Z.-W. (2017). "Refining Lagrange's four-square theorem". J. Number Theory. 175: 167–190. arXiv:1604.06723. doi:10.1016/j.jnt.2016.11.008. S2CID 119597024.
Spencer 1996 Spencer, Joel (1996). "Four Squares with Few Squares". Number Theory: New York Seminar 1991–1995. Springer US. pp. 295–297. doi:10.1007/978-1-4612-2418-1_22. ISBN 9780387948263.

mathnet.or.kr (Global: low place; English: low place)

trends.mathnet.or.kr

Oh 2000. Oh, Byeong-Kweon (2000). "Representations of Binary Forms by Quinary Quadratic Forms" (PDF). Trends in Mathematics. 3 (1): 102–107. Archived from the original (PDF) on 2017-02-02. Retrieved 2017-01-21.

semanticscholar.org (Global: 11^th place; English: 8^th place)

api.semanticscholar.org

Sun 2017. Sun, Z.-W. (2017). "Refining Lagrange's four-square theorem". J. Number Theory. 175: 167–190. arXiv:1604.06723. doi:10.1016/j.jnt.2016.11.008. S2CID 119597024.

web.archive.org (Global: 1^st place; English: 1^st place)

Oh 2000. Oh, Byeong-Kweon (2000). "Representations of Binary Forms by Quinary Quadratic Forms" (PDF). Trends in Mathematics. 3 (1): 102–107. Archived from the original (PDF) on 2017-02-02. Retrieved 2017-01-21.

youtube.com (Global: 9^th place; English: 13^th place)

Sarnak 2013. Sarnak, Peter (2013). "The Ramanujan Conjecture and some Diophantine Equations". YouTube (Lecture at Tata Institute of Fundamental Research). ICTS Lecture Series. Bangalore, India.

zbmath.org (Global: 1,923^rd place; English: 1,068^th place)

Stillwell 2003, pp. 138–157. Stillwell, John (2003). Elements of Number Theory. Undergraduate Texts in Mathematics. Springer. doi:10.1007/978-0-387-21735-2. ISBN 978-0-387-95587-2. Zbl 1112.11002.
Williams 2011, p. 119. Williams, Kenneth S. (2011). Number theory in the spirit of Liouville. London Mathematical Society Student Texts. Vol. 76. Cambridge University Press. ISBN 978-0-521-17562-3. Zbl 1227.11002.