On the (Q-)index of 2-domination critical graphs. - Zhouyang Chen; Zhi Hu; Wei Jin; Tingzeng Wu (Appl. Math. Comput., 2023)

On the weighted reverse cover cost of trees and unicyclic graphs with given diameter. - Yan Lv; Zhouyang Chen; Tingzeng Wu; Peng-Li Zhang (Appl. Math. Comput., 2024)