1.
Sun, Yongqi, Yang, Yuansheng, Lin, Xiaohui, Zheng, Wenping. The value of the Ramsey number R4(C4). A Canadian journal of applied mathematics, computer science and statistics [Internet]. 2007 Jun. 9 [cited 2026 Apr. 18];73. Available from: https://utilitasmathematica.com/index.php/Index/article/view/481