Wang, Haoli, Xu, Xirong, Yuansheng, Yang, Wang, Lei. On the 3-γt-Critical Graphs of Order Δ(G) + 3. A Canadian journal of applied mathematics, computer science and statistics [Internet]. 2011 May 9 [cited 2026 May 8];84. Available from: https://utilitasmathematica.com/index.php/Index/article/view/802