On Bipartite Graphs Having Minimum Fourth Adjacency Coefficient. - Shi-Cai Gong; Li-Ping Zhang; Shao-Wei Sun (Graphs Comb., 2022)

On 4-Sachs Optimal Graphs. - Shi-Cai Gong; Jia-Xin Wang; Shao-Wei Sun (Graphs Comb., 2023)