On two conjectures concerning trees with maximal inverse sum indeg index. - Wenshui Lin; Peifang Fu; Guodong Zhang; Peng Hu; Yikai Wang (Comput. Appl. Math., 2022)

Large trees with maximal inverse sum indeg index have no vertices of degree 2 or 3. - Yuehan Wu; Chengxi Hong; Peifang Fu; Wenshui Lin (Discret. Appl. Math., 2025)