Tian, S. (2025). Lagrange’s four squares theorem and Chen’s theorem. The Ramanujan Journal: An International Journal Devoted to the Areas of Mathematics Influenced by Ramanujan, 68(1). https://doi.org/10.1007/s11139-025-01163-x
ISO-690 (author-date, English)TIAN, Shuangrui, 2025. Lagrange’s four squares theorem and Chen’s theorem. The Ramanujan Journal: An International Journal Devoted to the Areas of Mathematics Influenced by Ramanujan. 1 September 2025. Vol. 68, no. 1, . DOI 10.1007/s11139-025-01163-x.
Modern Language Association 9th editionTian, S. “Lagrange’s Four Squares Theorem and Chen’s Theorem”. The Ramanujan Journal: An International Journal Devoted to the Areas of Mathematics Influenced by Ramanujan, vol. 68, no. 1, Sept. 2025, https://doi.org/10.1007/s11139-025-01163-x.
Mohr Siebeck - Recht (Deutsch - Österreich)Tian, Shuangrui: Lagrange’s four squares theorem and Chen’s theorem, The Ramanujan Journal: An International Journal Devoted to the Areas of Mathematics Influenced by Ramanujan 2025,
Emerald - HarvardTian, S. (2025), “Lagrange’s four squares theorem and Chen’s theorem”, The Ramanujan Journal: An International Journal Devoted to the Areas of Mathematics Influenced by Ramanujan, Vol. 68 No. 1, available at:https://doi.org/10.1007/s11139-025-01163-x.