The kite graph is determined by its adjacency spectrum. - Hatice Topcu; Sezer Sorgun (Appl. Math. Comput., 2018)

On the Spectral Characterization of Mixed Extensions of P3. - Willem H. Haemers; Sezer Sorgun; Hatice Topcu (Electron. J. Comb., 2019)

The graphs cospectral with the pineapple graph. - Hatice Topcu; Sezer Sorgun; Willem H. Haemers (Discret. Appl. Math., 2019)

The signed graphs with two eigenvalues unequal to ±1. - Willem H. Haemers; Hatice Topcu (Appl. Math. Comput., 2024)