Balancedness and spectra of signed graphs obtained by $$ dot{H}$$-join operation. - Peikang Zhang; Baofeng Wu; Changxiang He (Comput. Appl. Math., 2021)

The spectra of signed graphs obtained by $$ dot{H}$$-(generalized) join operation. - Yuying Li; Peikang Zhang; Kexiang Xu (Comput. Appl. Math., 2023)